Pyke, the Ripper

First Strike
Whenever Pyke kills a creature, create a treasure, untap Pyke and he gains +1/+1 until end
of turn.
{b/r}{u/b}{t}: Pyke deals damage equal to his power to target creature. If that creature had already taken damage this turn, destroy it instead.
"You're not on my list yet, keep it that way... Oh, wait, I wrote it on the back."