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: Add 
to your mana pool. If you played a land this turn, add 
to your mana pool instead, then return Haunted Vault to your hand.
| Oracle text |
| Haunted Vault {} |Land| Haunted Vault enters the battlefield tapped. / Tap: Add U to your mana pool. If you played a land this turn, add 2 to your mana pool instead, then return Haunted Vault to your hand. / Zombies you control have nonbasic landwalk. |