Sludge Crawler

Devoid (This card has no color.)
Ingest (Whenever this creature deals combat damage to a player, that player exiles the top card of their library.)
: Sludge Crawler gets +1/+1 until end of turn.

Eyeless Watcher

Devoid (This card has no color.)
When Eyeless Watcher enters the battlefield, create two 1/1 colorless Eldrazi Scion creature tokens. They have “Sacrifice this creature: Add .”

Incubator Drone

Devoid (This card has no color.)
When Incubator Drone enters the battlefield, create a 1/1 colorless Eldrazi Scion creature token. It has “Sacrifice this creature: Add .”

Turn Against

Devoid (This card has no color.)
Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

Call the Scions

Devoid (This card has no color.)
Create two 1/1 colorless Eldrazi Scion creature tokens. They have “Sacrifice this creature: Add .”

Grip of Desolation

Devoid (This card has no color.)
Exile target creature and target land.

Molten Nursery

Devoid (This card has no color.)
Whenever you cast a colorless spell, Molten Nursery deals 1 damage to any target.

Dominator Drone

Devoid (This card has no color.)
Ingest (Whenever this creature deals combat damage to a player, that player exiles the top card of their library.)
When Dominator Drone enters the battlefield, if you control another colorless creature, each opponent loses 2 life.

Forerunner of Slaughter

Devoid (This card has no color.)
: Target colorless creature gains haste until end of turn.