Magic: the Gathering (MTG) Artifact card from Revised Edition courtesy of Deckmaster
: Add 3 colorless mana to your mana pool. Mana Vault doesn't untap normally during untap phase; to untap it, you must pay 4 mana during your upkeep. If Mana Vault remains tapped during upkeep it does 1 damage to you. Drawing mana from this artifact is played as an interrupt.
3E • ENMark Tedin
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