Cleemis, Kamalor Avenger

Vigilance
At the beginning of your end step, if your or
a cat creature you control was dealt damage
this turn, target opponent exiles the top card
of your library, if that player does, the exiled
card deals damage equal to its converted mana
cost to the exiled cards owner.
Bravery, loyalty, honor, the morals of Karamor knighthood.