Rek'Sai, Breacher

champion unit

[Accelerate] (You may pay energy 1rune fury as an additional cost to have me enter ready.) [Assault] (+1 might while I'm an attacker.) Friendly units played from anywhere other than a player's hand have [Accelerate].

Rulings

• What happens if I play Atakhan from my deck with Rek’Sai, Breacher on the board? Can I pay the Accelerate cost and kill Rek’Sai for the Atakhan additional cost? Will it enter ready?