Obelisk Of The Old Ones

+1: Create a 1/1 colorless eldrazi scion token with: "Sacrifice this creature: Add {1} to your mana pool."
-2: Sacrifice a colorless eldrazi scion token: create three eldrazi scion tokens with: "Sacrifice this creature: Add {1} to your mana pool."
-X: Use this ability only to bring the Obelisk of Silence to 0 loyalty counters. Create a X/X eldrazi token with annihilator 1.