Open the Vaults | Magic: The Gathering
Formats Open the Vaults is Legal in
Official Oracle Text for Open the Vaults
Official Rulings for Open the Vaults
10/1/2009 : An Aura put onto the battlefield this way can't enchant an artifact or enchantment that's also being put onto the battlefield with Open the Vaults.
10/1/2009 : If an Aura can be returned to the battlefield with Open the Vaults, it must be, even if its owner doesn't like what it would enchant.
10/1/2009 : Any abilities that trigger during the resolution of Open the Vaults will wait to be put onto the stack until Open the Vaults finishes resolving. The player whose turn it is will put all of his or her triggered abilities on the stack in any order, then each other player in turn order will do the same. (The last ability put on the stack will be the first one that resolves.)