Carla Yeager

If any wall is destroyed, Carla Yeager dies. If
the wall was Wall Maria or Shiganshina, exile Carla Yeager instead.

If Eren Yeager('s) is on any battlefield when
Carla dies or is exiled, he gets a stun counter unless the controller pays {r}, then instead he
gets +5/+5 until the end of controllers next
turn.