Algorath the Merciless

+2: Target creature gets a +1+1 counter. They have double strike until end of turn
-1: Gain control of target creature with a +1+1 counter on it, it gains hast until end of turn, exile it at the beginning of your end step
-10: You get a token with "At the beginning of your upkeep, double +1+1 counters on creatures you control, add a -1-1 on all creatures you don't