The Key to the Vault is a rare Legendary Artifact — Equipment card from Magic: The Gathering (Outlaws of Thunder Junction, OTJ).
Rare
Outlaws of Thunder Junction (OTJ)
{1}{U}
Mana Value
2
Colors
U
Card Text
Whenever equipped creature deals combat damage to a player, look at that many cards from the top of your library. You may exile a nonland card from among them. Put the rest on the bottom of your library in a random order. You may cast the exiled card without paying its mana cost.
Equip {2}{U}
