{T}: Add {C}. {T}: Add {C}{C}. Spend this mana only to cast colorless Eldrazi spells or activate abilities of colorless Eldrazi.

{T}: Add {C}. {1}, {T}, Sacrifice this land: You may cast spells this turn as though they had flash.

({T}: Add {G}.)

({T}: Add {U}.)

({T}: Add {R}.)

({T}: Add {W}.)

{T}: Add {C}. {T}: Add {C}{C}. Spend this mana only to cast colorless spells. Activate only if you control seven or more lands.

({T}: Add {B}.)

This artifact doesn't untap during your untap step. {T}: Add {C}{C}{C}. {3}: Untap this artifact.

You may spend mana as though it were mana of any color. {T}: Add {C}{C}{C}{C}{C}. {5}, {T}: Draw a card for each color among permanents you control.

{T}: Add {C}{C}.

{T}: Add {C}{C}{C}.

When you cast this spell, you may return target creature card from your graveyard to the battlefield. Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents of their choice.)

Devoid (This card has no color.) {2}{R}, Sacrifice another colorless creature: This creature deals damage equal to the sacrificed creature's power to any target.

Devoid (This card has no color.) Kozilek's Return deals 2 damage to each creature. Whenever you cast an Eldrazi creature spell with mana value 7 or greater, you may exile this card from your graveyard. If you do, this card deals 5 damage to each creature.

As an additional cost to cast this spell, reveal a colorless creature card from your hand. Exile target creature if its power is less than or equal to the revealed card's power.