Mana Vault [Fourth Edition] U-ARC078 You may reveal a Dragon

You may reveal a Dragon card from among them and put it into your hand

that player puts the cards in their hand on the bottom of their library in any order

Set: Limited Edition Alpha Type: Enchantment Rarity: Uncommon Cost: {B}{B} {B}{B}: Counter target green spell

Set: Zendikar Type: Land Rarity: Rare Valakut

At the beginning of the upkeep of enchanted enchantment's controller

Mana Vault [Fourth Edition] U-ARC078 You may reveal a DragonSet: 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}.