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Knowledge Vault

{4}

Artifact

LEGLegends#281rare
Reserved List
Border
black
Frame
1993
Pull rate
~1 in 121–37600
Illustrator
Amy Weber
Found in
Legends Booster Pack · Legends Italian Booster Pack · Dominaria United Collector Booster Pack
Printings2CombosIn 1
CommanderLegalModernNot legalStandardNot legal
Format legality
AlchemyNot legal
BrawlNot legal
CommanderLegal
Competitive BrawlNot legal
DuelLegal
Future StandardNot legal
GladiatorNot legal
HistoricNot legal
LegacyLegal
ModernNot legal
OathbreakerLegal
Old SchoolNot legal
PauperNot legal
Pauper CommanderNot legal
PennyNot legal
PioneerNot legal
PreDHLegal
PremodernNot legal
StandardNot legal
Standard BrawlNot legal
TimelessNot legal
Tiny LeadersNot legal
VintageLegal
{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.
Market · per finishspark updated 19m ago · prices as of 2026-07-12
Nonfoil+0.0%
$47.70
$35.18 low$11.18 gap
Cheapest playable copy$47.70· across 2 printings

Rulings

3 · latest Oct 1, 2009 · one tap opens all
  • WotCOct 1, 2009

    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.

  • WotCOct 1, 2009

    You don't get to look at the cards exiled with Knowledge Vault.

  • WotCOct 1, 2008

    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.

Open in:ScryfallTCGplayer(affiliate)EDHREC