Noctorn's Center Hand

Devoid
Other Eldrazi creatures you control get +1/+1
Whenever you cast a colorless Eldrazi spell, if it was the first spell you cast this turn, Noctorn's Center Hand deals damage equal to its converted mana cost to target opponent.
When Noctorn chose two of his favorite monsters to lead his armies, he also chose a third, secret operative to assist from the shadows.