Mana Vault [Ultimate Masters] 38 ) When you pitch Grandeur

) When you pitch Grandeur of Valahai

Set: Promo Finish: Cold Foil Type: Weapon Subtype: Hammer (2H) Rarity: Promo Class: Guardian Power: 4 Once per Turn Action - [3 Resource]: Attack If you have 2 or more cards in your pitch zone with cost [3 Resource] or greater

Set: Summer Magic / Edgar Type: Enchantment — Aura Rarity: Uncommon Cost: {1}{G}{G} Enchant creature

Set: EX: Unseen Forces Type: Grass Rarity: Holo Rare Retreat cost: Colorless

but I can assure you

Mana Vault [Ultimate Masters] 38 ) When you pitch GrandeurSet: 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}.