Stalker of Night

Devoid, Trample, Annihilator 1
Stalker of Night cost {1} less to cast for each Eldrazi creature you control
When Stalker of Night enters the battlefield put X 1/1 Eldrazi scion creature tokens with "sacrifice this creature, add {c} to your mana pool" on the battlefield, where X is the amount of cards in target players exile pile
it's 10 not 1 and 0