Young Eldrazi crawl forth from the dust, compelled by a greater will.

Spawning Bed

{T}: Add {1} to your mana pool.{6}, {T}, Sacrifice Spawning Bed: Put three 1/1 colorless Eldrazi Scion creature tokens onto the battlefield. They have "Sacrifice this creature: Add {1} to your mana pool."

{T}: Add {C}.
{6}, {T}, Sacrifice this land: Create three 1/1 colorless Eldrazi Scion creature tokens. They have "Sacrifice this token: Add {C}."

Pioneer Masters

Modern Horizons 3 Commander

{T}: Add {C}.
{6}, {T}, Sacrifice Spawning Bed: Create three 1/1 colorless Eldrazi Scion creature tokens. They have "Sacrifice this creature: Add {C}."