Celine, Sureshot

Reach, Partner with Xyra Grey, Invincible
{t} Deal {x} damage to target player, creature, or Planeswalker where {x} is Celine, Sureshot's power

Stress - if Xyra Grey, Invincible is removed
from the battlefield, put Celine, Sureshot into
your hand from the battlefield

"Damnit Xyra, you're not invincible!"