Yax-Zay, Cosmic Interloper

Vigilance, Prowess
Whenever you cast a spell, you put a +1/+1 counter on each creature you control if this is the first spell you cast. If it is the second spell you cast, return two creatures from your graveyard onto the battlefield under your control. If it is the third spell you cast, exile all creatures your opponent's control, then they create 2/2 blue artifact Gyro tokens with flying.