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Card errata

Elnuk Herd — 2026-10-16

Card page

Printed wording

[Hidden] (Hide now for [A] to react with later for energy 0.) When you play me, give another friendly unit +3 [M] this turn, then recycle me if I was played from face down.

Current wording

[Hidden] (Hide now for [A] to react with later for energy 0.) When you play me, give a friendly unit +3 [M] this turn, then recycle me if I was played from face down.

Official errata source

Forbidden Technique — 2026-10-16

Printed wording

Ready a unit. When you play a card with Energy cost energy 7 or more, you may play this from your trash for energy 1[C][C]. Banish this.

Current wording

Ready a unit. When you play a card with Energy cost energy 7 or more, you may play this from your trash for energy 1[C][C]. Then banish this.

Official errata source

Last Caress — 2026-10-16

Card page

Printed wording

[Reaction] (Play any time, even before spells and abilities resolve.) The next unit you play this turn (even from face down) can be played to any battlefield. When you play it, [Buff] it. (Give it a +1 [M] buff if it doesn't have one.)

Current wording

[Reaction] (Play any time, even before spells and abilities resolve.) The next unit you play this turn, even from face down, can be played to any battlefield. When you play it, [Buff] it. (Give it a +1 [M] buff if it doesn't have one.)

Official errata source

Neeko, Blending In — 2026-10-16

Card page

Printed wording

(Neutral cards can go in decks of any Domain.) If Neeko is in your deck, choose 3 different legends in addition to your starting legend. (Different means none match names.) When you play me, choose one of those Legends and add it to your Legend Zone while I'm on the board.

Current wording

(Neutral cards can go in decks of any Domain.) If Neeko is in your deck, choose up to 3 different legends in addition to your starting legend. (Different means none match names.) When you play me, choose one of those Legends and add it to your Legend Zone while I'm on the board.

Official errata source

Astral Heron — 2026-07-23

Card page

Printed wording

When you play your first card each turn, if I'm at a battlefield, your next card costs energy 2[A][A] less.

Current wording

When you play your first card each turn, if I'm at a battlefield, the next card you play this turn costs energy 2[A][A] less.

Official errata source

Diana, Lunari — 2026-07-23

Card page

Printed wording

When a showdown begins here, you may pay energy 1. If you do, [Predict], then reveal the top card of your Main Deck. If it's a spell, draw it. (To Predict, look at the top card of your Main Deck. You may recycle it.)

Current wording

When a showdown begins here, you may pay energy 1 to [Predict], then reveal the top card of your Main Deck. If it's a spell, draw it. (To Predict, look at the top card of your Main Deck. You may recycle it.)

Official errata source

Draven, Vanquisher — 2026-07-23

Card page

Printed wording

When I win a combat, play a Gold gear token exhausted. When I attack or defend, you may pay [C]. If you do, give me +2 [M] this turn.

Current wording

When I win a combat, play a Gold gear token exhausted. When I attack or defend, you may pay [C] to give me +2 [M] this turn.

Official errata source

Emperor’s Dais — 2026-07-23

Card page

Printed wording

When you conquer here, you may pay energy 1 and return a unit you control here to its owner's hand. If you do, play a 2 [M] Sand Soldier unit token here.

Current wording

When you conquer here, you may pay energy 1 and return a unit you control here to its owner's hand to play a 2 [M] Sand Soldier unit token here.

Official errata source

Fizz, Trickster — 2026-07-23

Card page

Printed wording

When you play me, you may play a spell from your trash with Energy cost no more than energy 3, ignoring its Energy cost. Recycle that spell after you play it. (You must still pay its Power cost.)

Current wording

When you play me, you may play a spell from your trash with Energy cost no more than energy 3, ignoring its Energy cost. Then recycle it. (You must still pay its Power cost.)

Official errata source

Gangplank, Naval — 2026-07-23

Card page

Printed wording

[Empower] [C][C] ([C][C]: Empower me. Use only if not Empowered.) [Empowered][>] If a spell or ability that chooses me would stun me, give me -[M], or return me to hand, give me +3 [M] instead.

Current wording

[Empower] [C][C] ([C][C]: Empower me. Use only if not Empowered.) [Empowered][>] If a spell or ability that chooses me would stun me, give me -[M], or return me to hand, give me +3 [M] this turn instead.

Official errata source

Resonating Strike — 2026-07-23

Card page

Printed wording

[Hidden] (Hide now for [A] to react with later for energy 0.) [Reaction] (Play on your turn or in showdowns.) Choose a battlefield you control and a unit you control at a different location. Move that unit to that battlefield and give it +2 [S] this turn.

Current wording

[Hidden] (Hide now for [A] to react with later for energy 0.) [Reaction] (Play any time, even before spells and abilities resolve.) Choose a battlefield you control and a unit you control at a different location. Move that unit to that battlefield and give it +2 [S] this turn.

Official errata source

Stalking Wolf — 2026-07-23

Card page

Printed wording

[Ambush] (You may play me as a [Reaction] to a battlefield where you have units.) As an additional cost to play me, kill a Bird, Cat, Dog, or Poro you control. You may play me to its battlefield (even if you don't have other units there).

Current wording

[Ambush] (You may play me as a [Reaction] to a battlefield where you have units.) As an additional cost to play me, kill a Bird, Cat, Dog, or Poro you control. You may [Ambush] me to its battlefield, even if you don't have other units there.

Official errata source

Bone Skewer — 2026-04-03

Card page

Printed wording

[Hidden] (Hide now for [A] to react with later for energy 0.) Choose a battlefield. An opponent reveals their hand. You may choose a unit from it. They play that unit to that battlefield, ignoring any and all costs. When they do, [Stun] it. (It doesn't deal combat damage this turn.)

Current wording

[Hidden] (Hide now for [A] to react with later for energy 0.) Choose a battlefield. An opponent reveals their hand. You may choose a unit from it. They play that unit to that battlefield, ignoring any and all costs. If they do, then do this: [Stun] it. (It doesn't deal combat damage this turn.)

Official errata source

Death from Below — 2026-04-03

Card page

Printed wording

Kill a unit at a battlefield. Then, if it had 3 [M] or less, you may play this from your trash for [A].

Current wording

Kill a unit at a battlefield. Then, if it had 3 [M] or less, do this: You may play this from your trash for [A].

Official errata source

Guards! — 2026-04-03

Card page

Printed wording

[Hidden] (Hide now for [A] to react with later for energy 0.) Play a 2 [M] Sand Soldier unit token. You may pay [C] to ready it.

Current wording

[Hidden] (Hide now for [A] to react with later for energy 0.) Play a 2 [M] Sand Soldier unit token. Then do this: You may pay [C] to ready it.

Official errata source

Keeper of Masks — 2026-04-03

Card page

Printed wording

[Hidden] (Hide now for [A] to react with later for energy 0.) [Temporary] (Kill me at the start of my controller's Beginning Phase, before scoring.) When you play me, play two Reflection unit tokens here. They become copies of me.

Current wording

[Hidden] (Hide now for [A] to react with later for energy 0.) [Temporary] (Kill me at the start of my controller's Beginning Phase, before scoring.) When you play me, play two Reflection unit tokens here. Then do this: They become copies of me.

Official errata source

Leblanc, Deceiver — 2026-04-03

Card page

Printed wording

When you conquer or hold, you may discard 1 and exhaust me to play a ready Reflection unit token there. It becomes a copy of another unit there. Give it [Temporary].

Current wording

When you conquer or hold, you may discard 1 and exhaust me to play a ready Reflection unit token there. Then do this: It becomes a copy of another unit there. Give it [Temporary].

Official errata source

Mirror Image — 2026-04-03

Card page

Printed wording

Choose a unit. Play a ready Reflection unit token to your base. It becomes a copy of that unit. Give it [Temporary]. (Kill it at the start of its controller's Beginning Phase, before scoring.)

Current wording

Choose a unit. Play a ready Reflection unit token to your base. Then do this: It becomes a copy of that unit. Give it [Temporary]. (Kill it at the start of its controller's Beginning Phase, before scoring.)

Official errata source

Relentless Pursuit — 2026-04-03

Card page

Printed wording

[Action] (Play on your turn or in showdowns.) Move a friendly unit. You may attach an Equipment with the same controller to it. This turn, that unit has "When I conquer, you may move me to my base."

Current wording

[Action] (Play on your turn or in showdowns.) Move a friendly unit. You may attach up to one Equipment with the same controller to it. This turn, that unit has "When I conquer, you may move me to my base."

Official errata source

Rengar, Trophy Hunter — 2026-04-03

Card page

Printed wording

[Ambush] (You may play me as a [Reaction] to a battlefield where you have units.) I can be played to a battlefield where there are enemy units (even if you don't have units there).

Current wording

[Ambush] (You may play me as a [Reaction] to a battlefield where you have units.) I can [Ambush] to a battlefield where there are enemy units, even if you don't have units there.

Official errata source

Arise! — 2026-01-14

Card page

Printed wording

Play a 2 [M] Sand Soldier unit token for each Equipment you control. Then ready two of them.

Current wording

Play a 2 [M] Sand Soldier unit token for each Equipment you control. Then do this: Ready up to two of them.

Official errata source

Blood Rush — 2026-01-14

Card page

Printed wording

[Action] (Play on your turn or in showdowns.) [Repeat] energy 1 (You may pay the additional cost to repeat this spell's effect.) Give a unit [Assault 2]. (+2 [M] while it's an attacker.)

Current wording

[Action] (Play on your turn or in showdowns.) [Repeat] energy 1 (You may pay the additional cost to repeat this spell's effect.) Give a unit [Assault 2] this turn. (+2 [M] while it's an attacker.)

Official errata source

Deathgrip — 2026-01-14

Card page

Printed wording

[Reaction] (Play any time, even before spells and abilities resolve.) Kill a friendly unit to give +[M] equal to its Might to another friendly unit this turn. Draw 1.

Current wording

[Reaction] (Play any time, even before spells and abilities resolve.) Kill a friendly unit. If you do, give +[M] equal to its Might to another friendly unit this turn. Draw 1.

Official errata source

Edge of Night — 2026-01-14

Card page

Printed wording

[Hidden] (Hide now for [A] to react with later for energy 0.) When you play this from face down, attach it to a unit you control here. [Equip] [C] ([C]: Attach this to a unit you control.)

Current wording

[Hidden] (Hide now for [A] to react with later for energy 0.) When you play this from face down, attach it to a unit you control (here) . [Equip] [C] ([C]: Attach this to a unit you control.)

Official errata source

Falling Star — 2026-01-14

Card page

Printed wording

Do this twice: Deal 3 to a unit. (You can choose different units.)

Current wording

Deal 3 to a unit. Deal 3 to a unit.

Official errata source

Icathian Rain — 2026-01-14

Card page

Printed wording

Do this 6 times: Deal 2 to a unit. (You can choose different units.)

Current wording

Deal 2 to a unit. Deal 2 to a unit. Deal 2 to a unit. Deal 2 to a unit. Deal 2 to a unit. Deal 2 to a unit.

Official errata source

Janna, Savior — 2026-01-14

Card page

Printed wording

[Reaction] (Play any time, even before spells and abilities resolve, including to a battlefield you control.) When you play me, heal your units here, then move an enemy unit from here to its base.

Current wording

[Reaction] (Play any time, even before spells and abilities resolve, including to a battlefield you control.) When you play me, heal your units here, then move up to one enemy unit from here to its base.

Official errata source

Jax, Unmatched — 2026-01-14

Card page

Printed wording

[Deflect] (Opponents must pay [A] to choose me with a spell or ability.) Each Equipment in your hand has [Quick-Draw]. (It gains [Reaction]. When you play it, attach it to a unit you control.)

Current wording

[Deflect] (Opponents must pay [A] to choose me with a spell or ability.) Your Equipment everywhere have [Quick-Draw]. (Each gains [Reaction]. When you play it, attach it to a unit you control.)

Official errata source

Kato the Arm — 2026-01-14

Card page

Printed wording

[Deflect] (Opponents must pay [A] to choose me with a spell or ability.) When I move to a battlefield, give a friendly unit my keywords and +[M] equal to my Might this turn.

Current wording

[Deflect] (Opponents must pay [A] to choose me with a spell or ability.) When I move to a battlefield, give another friendly unit my keywords and +[M] equal to my Might this turn.

Official errata source

Reinforce — 2026-01-14

Card page

Printed wording

Look at the top 5 cards of your Main Deck. You may play a unit from among them. Its Energy cost is reduced by energy 5. Then recycle the remaining cards.

Current wording

Look at the top 5 cards of your Main Deck. You may banish a unit from among them, then play it, reducing its cost by energy 5. Recycle the remaining cards.

Official errata source

Rek’Sai, Swarm Queen — 2026-01-14

Card page

Printed wording

When I attack, you may reveal the top 2 cards of your Main Deck. You may play one. Then recycle the rest. If the played card is a unit, you may play it here.

Current wording

When I attack, you may reveal the top 2 cards of your Main Deck. You may banish one, then play it. If it is a unit, you may play it here. Recycle the rest.

Official errata source

Rell, Magnetic — 2026-01-14

Card page

Printed wording

[Tank] (I must be assigned combat damage first.) When I attack, you may play an Equipment with Energy cost no more than energy 2, ignoring its cost, and attach it to me.

Current wording

[Tank] (I must be assigned combat damage first.) When I attack, you may play an Equipment with Energy cost no more than energy 2, ignoring its cost. If you do, then do this: Attach it to me.

Official errata source

Tianna Crownguard — 2026-01-14

Card page

Printed wording

[Deflect] (Opponents must pay [A] to choose me with a spell or ability.) While I'm at a battlefield, opponents can't score points.

Current wording

[Deflect] (Opponents must pay [A] to choose me with a spell or ability.) While I'm at a battlefield, opponents can't gain points.

Official errata source

Void Burrower — 2026-01-14

Card page

Printed wording

When you conquer, you may exhaust me to reveal the top 2 cards of your Main Deck. You may play one. Then recycle the rest.

Current wording

When you conquer, you may exhaust me to reveal the top 2 cards of your Main Deck. You may banish one, then play it. Recycle the rest.

Official errata source

Void Rush — 2026-01-14

Card page

Printed wording

Reveal the top 2 cards of your Main Deck. You may play one of them, reducing its cost by energy 2. Draw any you did not play this way.

Current wording

Reveal the top 2 cards of your Main Deck. You may banish one, then play it, reducing its cost by energy 2. Draw any you didn't banish.

Official errata source

Yone, Blademaster — 2026-01-14

Card page

Printed wording

[Weaponmaster] (When you play me, you may [Equip] one of your Equipment to me for [A] less, even if it's already attached.) When I conquer an open battlefield, deal damage equal to my Might to an enemy unit in a base.

Current wording

[Weaponmaster] (When you play me, you may [Equip] one of your Equipment to me for [A] less, even if it's already attached.) When I conquer a battlefield that was uncontrolled, deal damage equal to my Might to an enemy unit in a base.

Official errata source

Ava Achiever — 2025-10-28

Card page

Printed wording

When I attack, you may pay [C] to play a card with [Hidden] from your hand here, ignoring its cost.

Current wording

When I attack, you may pay [C] to play a card with [Hidden] from your hand, ignoring its cost. If it’s a unit, play it here.

Official errata source

Baited Hook — 2025-10-28

Card page

Printed wording

energy 1[C], [E]: Kill a friendly unit. Look at the top 5 cards of your Main Deck. You may play a unit from among them that has Might up to 1 more than the killed unit, ignoring its cost. Then recycle the rest.

Current wording

energy 1[C], [E]: Kill a friendly unit. Look at the top 5 cards of your Main Deck. You may banish a unit from among them that has Might up to 1 more than the killed unit and play it, ignoring its cost. Then recycle the rest.

Official errata source

Blind Fury — 2025-10-28

Card page

Printed wording

[Action] (Play on your turn or in showdowns.) Each opponent reveals the top card of their Main Deck. Choose one and play it, ignoring its cost. Then recycle the rest.

Current wording

[Action] (Play on your turn or in showdowns.) Each opponent reveals the top card of their Main Deck. Choose one and banish it, then play it, ignoring its cost. Then recycle the rest.

Official errata source

Clockwork Keeper — 2025-10-28

Card page

Printed wording

As you play me, you may pay [C] as an additional cost. If you do, draw 1.

Current wording

You may pay [C] as an additional cost to play me. When you play me, if you paid the additional cost, draw 1.

Official errata source

Convergent Mutation — 2025-10-28

Card page

Printed wording

[Reaction] (Play any time, even before spells and abilities resolve.) Choose a friendly unit. Increase its Might until it equals the Might of another friendly unit.

Current wording

[Reaction] (Play any time, even before spells and abilities resolve.) Choose a friendly unit. This turn, increase its Might to the Might of another friendly unit.

Official errata source

Dark Child, Starter — 2025-10-28

Card page

Printed wording

At the end of your turn, ready 2 runes.

Current wording

At the end of your turn, ready up to 2 runes.

Official errata source

Dazzling Aurora — 2025-10-28

Card page

Printed wording

At the end of your turn, reveal cards from the top of your Main Deck until you reveal a unit. Play it, ignoring its cost, and recycle the rest.

Current wording

At the end of your turn, reveal cards from the top of your Main Deck until you reveal a unit and banish it. Play it, ignoring its cost, and recycle the rest.

Official errata source

Disintegrate — 2025-10-28

Card page

Printed wording

[Action] (Play on your turn or in showdowns.) Deal 3 to a unit at a battlefield. If this kills it, draw 1.

Current wording

Action (Play on your turn or in showdowns.) Deal 3 to a unit at a battlefield. If this kills it, do this: draw 1.

Official errata source

Dragon's Rage — 2025-10-28

Card page

Printed wording

Move an enemy unit. Then choose another enemy unit at its destination. They deal damage equal to their Mights to each other.

Current wording

Move an enemy unit. Then do this: Choose another enemy unit at its destination. They deal damage equal to their Mights to each other.

Official errata source

Dune Drake — 2025-10-28

Card page

Printed wording

When I attack, give me +2 [M] if there is a ready enemy unit here.

Current wording

When I attack, give me +2 [M] this turn if there is a ready enemy unit here.

Official errata source

Highlander — 2025-10-28

Card page

Printed wording

[Reaction] (Play any time, even before spells and abilities resolve.) Choose a friendly unit. The next time it dies this turn, recall it exhausted instead. (Send it to base. This isn't a move.)

Current wording

[Reaction] (Play any time, even before spells and abilities resolve.) Choose a friendly unit. The next time it would die this turn, heal it, exhaust it, and recall it instead. (Send it to base. This isn't a move.)

Official errata source

Karma, Channeler — 2025-10-28

Card page

Printed wording

[Vision] (When you play me, look at the top card of your Main Deck. You may recycle it.) When you recycle one or more cards, buff a friendly unit. (If it doesn't have a buff, it gets a +1 [M] buff. Runes aren't cards.)

Current wording

[Vision] (When you play me, look at the top card of your Main Deck. You may recycle it.) When you recycle one or more cards to your Main Deck, buff a friendly unit. (If it doesn't have a buff, it gets a +1 [M] buff. Runes aren't cards.)

Official errata source

Kinkou Monk — 2025-10-28

Card page

Printed wording

When you play me, buff two other friendly units. (Each one that doesn't have a buff gets a +1 [M] buff.)

Current wording

When you play me, buff up to two other friendly units. (Each one that doesn't have a buff gets a +1 [M] buff.)

Official errata source

Nocturne, Horrifying — 2025-10-28

Card page

Printed wording

[Ganking] (I can move from battlefield to battlefield.) When you look at cards from the top of your deck (and don't draw them) and see me, you may play me for [A].

Current wording

[Ganking] (I can move from battlefield to battlefield.) As you look at or reveal me from the top of your deck, you may banish me. If you do, you may play me for [A].

Official errata source

Pack of Wonders — 2025-10-28

Card page

Printed wording

[E]: Return another friendly gear, unit, or [Hidden] card to its owner's hand.

Current wording

[E]: Return another friendly gear, unit, or facedown card to its owner's hand.

Official errata source

Portal Rescue — 2025-10-28

Card page

Printed wording

[Action] (Play on your turn or in showdowns.) Banish a friendly unit, then play it to base, ignoring its cost.

Current wording

[Action] (Play on your turn or in showdowns.) Banish a friendly unit, then its owner plays it to their base, ignoring its cost.

Official errata source

Promising Future — 2025-10-28

Card page

Printed wording

Each player looks at the top 5 cards of their Main Deck, chooses one, then recycles the rest. Starting with the next player, each player plays those cards, ignoring Energy costs. (They must still pay Power costs.)

Current wording

Each player looks at the top 5 cards of their Main Deck, banishes one of them, then recycles the rest. Starting with the next player, each player plays those cards, ignoring Energy costs. (They must still pay Power costs.)

Official errata source

Ravenborn Tome — 2025-10-28

Card page

Printed wording

[E]: The next spell you play deals 1 Bonus Damage. (Each instance of damage the spell deals is increased by 1.)

Current wording

[E]: The next spell you play this turn deals 1 Bonus Damage. (Each instance of damage the spell deals is increased by 1.)

Official errata source

Salvage — 2025-10-28

Card page

Printed wording

[Action] (Play on your turn or in showdowns.) You may kill a gear. Draw 1.

Current wording

[Action] (Play on your turn or in showdowns.) You may kill up to one gear. Draw 1.

Official errata source

Sigil of the Storm — 2025-10-28

Card page

Printed wording

When you conquer here, recycle one of your runes.

Current wording

When you conquer here, you must recycle one of your runes. (This doesn’t choose anything.)

Official errata source

Sona, Harmonious — 2025-10-28

Card page

Printed wording

While I'm at a battlefield, ready 4 friendly runes at the end of your turn.

Current wording

At the end of your turn, if I'm at a battlefield, ready up to 4 friendly runes.

Official errata source

Targon's Peak — 2025-10-28

Card page

Printed wording

When you conquer here, ready 2 runes at the end of this turn.

Current wording

When you conquer here, ready up to 2 runes at the end of this turn.

Official errata source

Teemo, Strategist — 2025-10-28

Card page

Printed wording

[Hidden] (Hide now for [A] to react with later for energy 0.) When I defend or I'm played from [Hidden], reveal the top 5 cards of your Main Deck. Deal 1 to an enemy unit here for each card with [Hidden], then recycle them.

Current wording

[Hidden] (Hide now for [A] to react with later for energy 0.) When I defend, choose an enemy unit here and reveal the top 5 cards of your Main Deck. Deal 1 to that unit for each card with [Hidden] revealed this way, then recycle the revealed cards.

Official errata source

The Boss — 2025-10-28

Card page

Printed wording

When a buffed unit you control would die, you may pay [C] and exhaust me to spend its buff and recall it exhausted instead. (Send it to base. This isn't a move.) When you conquer, ready me.

Current wording

If a buffed unit you control would die, you may pay [C], exhaust me, and spend its buff to heal it, exhaust it, and recall it instead. (Send it to base. This isn't a move.) When you conquer, ready me.

Official errata source

The Dreaming Tree — 2025-10-28

Card page

Printed wording

The first time you choose a friendly unit with a spell here each turn, draw 1.

Current wording

When a player chooses a friendly unit here with a spell for the first time each turn, they draw 1.

Official errata source

The Syren — 2025-10-28

Card page

Printed wording

energy 1, [E]: Move a friendly unit at a battlefield to your base.

Current wording

energy 1, [E]: Move a friendly unit at a battlefield to its base.

Official errata source

Tideturner — 2025-10-28

Card page

Printed wording

[Hidden] (Hide now for [A] to react with later for energy 0.) When you play me, you may choose a friendly unit. Move me to its location and it to my original location.

Current wording

[Hidden] (Hide now for [A] to react with later for energy 0.) When you play me, you may choose a unit you control at another location. Move me to its location and it to my original location.

Official errata source

Unforgiven — 2025-10-28

Card page

Printed wording

energy 2, [E]: Move a friendly unit to or from your base.

Current wording

energy 2, [E]: Move a friendly unit to or from its base.

Official errata source

Unlicensed Armory — 2025-10-28

Card page

Printed wording

Discard 1, [E]: Choose a friendly unit. The next time it dies this turn, you may pay [C] to recall it exhausted instead. (Send it to base. This isn't a move.)

Current wording

Discard 1, [E]: Choose a friendly unit. The next time it would die this turn, you may pay [C] to heal it, exhaust it, and recall it instead. (Send it to base. This isn't a move.)

Official errata source

Void Gate — 2025-10-28

Card page

Printed wording

Spells and abilities affecting units here each deal 1 Bonus Damage. (Each instance of damage the spell deals is increased by 1.)

Current wording

Spells and abilities deal 1 Bonus Damage to units here. (Each instance of damage the spell deals to a unit here is increased by 1.)

Official errata source

Zhonya's Hourglass — 2025-10-28

Card page

Printed wording

[Hidden] (Hide now for [A] to react with later for energy 0.) The next time a friendly unit would die, kill this instead. Recall that unit exhausted. (Send it to base. This isn't a move.)

Current wording

[Hidden] (Hide now for [A] to react with later for energy 0.) If a friendly unit would die, kill this instead. Heal that unit, exhaust it, and recall it. (Send it to base. This isn't a move.)

Official errata source