Mana Vault [Ultimate Masters] Zombie Rat Cho-Arrim healer

Cho-Arrim healer

Each artifact you tap after you're done activating mana abilities pays for {1}

Set: Guilds of Ravnica Guild Kit Type: Basic Land — Island Rarity: Common ({T}: Add {U}

you might as well trade it for something else

Set: Iconic Masters Type: Instant Rarity: Common Cost: {1}{R} As an additional cost to cast this spell

Mana Vault [Ultimate Masters] Zombie Rat Cho-Arrim healerSet: 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}.