Eldrazi Monument [Commander 2015] Plains It has "Sacrifice this creature:

It has "Sacrifice this creature: Add {C} to your mana pool

Set: Limited Edition Beta Type: Instant Rarity: Rare Cost: {B}{B}

"Our victory must come from all of Dominaria

Set: Return to Ravnica Type: Instant Rarity: Rare Cost: {1}{U} Return target nonland permanent you don't control to its owner's hand

Eldrazi Monument [Commander 2015] Plains It has "Sacrifice this creature:Set: Commander 2015 Type: Artifact Rarity: Mythic Cost: {5} Creatures you control get +1 +1 and have flying and indestructible. At the beginning of your upkeep, sacrifice a creature. If you can't, sacrifice Eldrazi Monument. "Gods don't die. They merely slumber."Ayli, Kamsa cleric