Eldrazi Truth

Cards and permanents you control have Devoid.
Effects you control that can produce mana of any
color can also produce that much colorless mana.
Eldrazi Spawn and Eldrazi Scions you control
have "Sacrifice this creature: Add one mana of
any color."
I have peered into the Blind Eternities, and I have
seen the truth. -- Zzklyk, Prophet of Eternities