Highlander

signature spell

[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.)

Rulings

• Can I use these cards to save a unit that’s already in its base? What about one that’s already exhausted? If I can’t recall it, do I still exhaust it?