Zeerx, the Eldritch Beckoner

Whenever you sacrifice two or more non-token
creatures, you may put a tribute counter on
Zeerx, the Eldritch Beckoner and draw a card.
This ability triggers only once each turn.
Remove 5 tribute counters from Zeerx, the
Eldritch Beckoner: Sacrifice Zeerx, the Eldritch
Beckoner. If you do, create two 7/7 black and
blue Horror creature tokens with trample.