Ulamog's Dreadsire

When you cast this spell, create a 10/10 colorless Eldrazi creature token.

Annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent of their choice.)

: Create two 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this token: Add ."

: Cast any number of Eldrazi spells from among cards you own outside the game without paying their mana costs.

When you cast this spell, target opponent exiles the top half of their library, rounded up.

Ward—Sacrifice two permanents.

Ulamog enters with a number of +1/+1 counters on it equal to the greatest mana value among cards in exile.

Ulamog has annihilator X, where X is the number of +1/+1 counters on it.

Flying, vigilance, trample

When this creature dies, create a 3/3 colorless Golem artifact creature token with flying, a 3/3 colorless Golem artifact creature token with vigilance, and a 3/3 colorless Golem artifact creature token with trample.

Devoid (This card has no color.)

Flying, Trample, Forestwalk, protection from non-Squirrels

When you cast Emrakul and Chatterfang, create 15 1/1 green Eldrazi Squirrel Scion creature tokens with "Sacrifice this creature: Add or ".

Flying, first strike, vigilance, lifelink

Your opponents can't cast spells with mana value 3 or less.