Mana Vault [Limited Edition Alpha] Magic 2015 they put the top card

they put the top card of their library into their graveyard

you may pay {W}{W}

Set: Darksteel Type: Artifact Rare Cost: {3} As long as Trinisphere is untapped

−2: Draw a card for each tapped creature target player controls

Set: Limited Edition Alpha Type: Enchantment — Aura Rare Cost: {B}{B} Enchant artifact At the beginning of the upkeep of enchanted artifact's controller

Mana Vault [Limited Edition Alpha] Magic 2015 they put the top cardSet: Limited Edition Alpha Type: Artifact 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}.