Mana Vault [Beta Edition] Sorcery where X is the greatest

where X is the greatest power among creatures you control

Set: Commander 2017 Type: Creature — Dragon Rarity: Mythic Cost: {6}{R}{R} Flying

Set: Beta Edition Type: Creature — Djinn Rarity: Rare Cost: {4}{U}{U} Flying (This creature can't be blocked except by creatures with flying or reach

Scourge of Kroog enters the battlefield tapped and doesn't untap during your untap step

Sacrifice another creature: Exile target nonland permanent

Mana Vault [Beta Edition] Sorcery where X is the greatestSet: Beta Edition Type: Artifact Rarity: Rare Cost: {1} Mana Vault doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault. At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you. {T}: Add {C}{C}{C}.