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Knowledge Vault image 1 Knowledge Vault image 2
Masters Edition III (ME3 | #198 | 2009-09-07)
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Knowledge Vault

4
Artifact
Artist: Amy Weber

2, T: Exile the top card of your library face down.

0: Sacrifice this artifact. If you do, discard your hand, then put all cards exiled with this artifact into their owner's hand.

When this artifact leaves the battlefield, put all cards exiled with it into their owner's graveyard.

$46.85 cheapest print

Prices

Set # Treatment Finish Price (USD)
Legends 281 Regular Nonfoil $46.85

Price History

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Printings (2)

Knowledge Vault — Masters Edition III
Masters Edition III
#198 Uncommon —
Regular Nonfoil Foil
Amy Weber
Knowledge Vault — Legends
Legends
#281 Rare $46.85
Regular Nonfoil
Amy Weber

Rulings

2009-10-01 wotc
You don't get to look at the cards exiled with Knowledge Vault.
2009-10-01 wotc
If you activate Knowledge Vault's second ability, all that happens at that time is that you pay a cost of {0}. As the ability resolves, you must sacrifice Knowledge Vault. This is mandatory. If you are able to do so, you discard your hand and put all cards exiled with Knowledge Vault into their owners' hands. If you aren't able to do so because Knowledge Vault left the battlefield or changed controllers before the ability resolves, nothing happens.
2008-10-01 wotc
You can activate the second ability any time you have priority, including in response to itself. However, you will only be able to sacrifice the Vault as the first such ability resolves.

Format Legality

Standard Not Legal
Future Not Legal
Historic Not Legal
Timeless Not Legal
Gladiator Not Legal
Pioneer Not Legal
Modern Not Legal
Legacy Legal
Pauper Not Legal
Vintage Legal
Penny Not Legal
Commander Legal
Oathbreaker Legal
Standardbrawl Not Legal
Brawl Not Legal
Alchemy Not Legal
Paupercommander Not Legal
Duel Legal
Oldschool Not Legal
Premodern Not Legal
Predh Legal