I AM SARCATOG HEAR ME RAWR XP

Exile two cards from your graveyard: This creature gets +1/+1 until end of turn. Sacrifice an artifact: This creature gets +1/+1 until end of turn.

Whenever another creature you control enters, put a +1/+1 counter on that creature and a +1/+1 counter on this creature.

This creature has flying as long as you control a blue creature. This creature has persist as long as you control a black creature. (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)