Zellathra, Swarm Harbinger

Trample, Shroud
Creature Tokens you control get +1/+1.
Zellathra, Swarm Harbinger enters the battlefield
with three plus X +1/+1 counters on it.
When Zellathra, Swarm Harbinger enters the battlefield, create X 1/1 Eldrazi Scion creature
tokens with Sacrifice this creature: Add {1} to your manapool.
Eldrazi you control have {8}: Create a token that
is a copy of this creature.