Cultivator Drone | Creature | Eldrazi Drone | Devoid (This card has no color.)
{T}: Add {C}. Spend this mana only to cast a colorless spell, activate an ability of a colorless permanent, or pay a cost that contains {C}. ({C} represents colorless mana.) | Slawomir Maniak
Kozilek's Shrieker | Creature | Eldrazi Drone | Devoid (This card has no color.)
{C}: Kozilek's Shrieker gets +1/+0 and gains menace until end of turn. (It can't be blocked except by two or more creatures. {C} represents colorless mana.) | Jason Felix
Eldrazi Aggressor | Creature | Eldrazi Drone | Devoid (This card has no color.)
Eldrazi Aggressor has haste as long as you control another colorless creature. | Mathias Kollros
Scion Summoner | Creature | Eldrazi Drone | Devoid (This card has no color.)
When Scion Summoner enters the battlefield, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}." ({C} represents colorless mana.) | Johann Bodin