Mana Vault [Fourth Edition] Eternal Masters and the second player controls

and the second player controls the first player during the first player's next turn

put Mox Diamond onto the battlefield

prevent all but 1 of that damage

Set: Saviors of Kamigawa Type: Instant Rarity: Rare Cost: {U}{U} Copy target instant or sorcery spell

they rise to meet their enemies

Mana Vault [Fourth Edition] Eternal Masters and the second player controlsSet: Fourth 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}.