Knowledge Vault
Current paper retail
No paper retail prices.
MTGO (Cardhoarder)
retail$0.04 tix
This printing
SetME3
Collector #198
Released2009-09-07
Rarityuncommon
ArtistAmy Weber
LanguageEN
Layoutnormal
AttributesReprint
ScryfallOpen ↗

Knowledge Vault

UncommonReserved listMV 4
Artifact
, : Exile the top card of your library face down.
: 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.
Card capabilities
ArtifactExile effect
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Other printings
1 other English printingEarliest 1994-06-01Newest 1994-06-01Cheapest priced $45.39 in LEG
Rulings (3)
wotc1 Oct 2009
You don't get to look at the cards exiled with Knowledge Vault.
wotc1 Oct 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.
wotc1 Oct 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.