Mana Vault [Ultimate Masters] Tempest Whenever a basic land is

Whenever a basic land is tapped for mana of the chosen color

Set: Portal Three Kingdoms Type: Creature — Wolf Rarity: Uncommon Cost: {2}{G} You may have Lone Wolf assign its combat damage as though it weren't blocked

Set: Urza's Saga Type: Enchantment Rarity: Rare Cost: {2}{R}{R} Creatures can't block

Demons can sometimes be bent to a more focused purpose

Mana cost includes color

Mana Vault [Ultimate Masters] Tempest Whenever a basic land isSet: Ultimate Masters Type: Artifact Rarity: Mythic 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}.