Mana Vault [Ultimate Masters] Portal Three Kingdoms Promos you'd need the energy of

you'd need the energy of the giant's tonic

Set: Fifth Dawn Type: Artifact Creature — Construct Rare Cost: {4} No more than one creature can attack each combat

Set: Unhinged Type: Instant Common Cost: {3}{B} Target creature gets -X/-X until end of turn

Soldevi Machinist

Mana Vault [Ultimate Masters] Portal Three Kingdoms Promos you'd need the energy ofSet: Ultimate Masters Type: Artifact 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}.