Shiv, Swift Mercenary

Haste
When Shiv blocks or would become blocked, it
gets +2/+2 until end of turn.
At the beginning of your end step, if Shiv
entered the battlefield this turn, you may pay
{1}{r}. If you don't, return Shiv to your hand.
"Fate had its ways with me, but I sucker-punched
that bitch and got a new thinker." Shiv gestured to
a faint scar hidden in his mane.