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.
MTG · Card
◇ Catalog #281
Knowledge Vault
leg·#281·rare·nonfoil
Illus. Amy Weber
—
in vault
—
for trade
—
wishlisted
Jun 1994
32 yr ago
Value
$47.02+$0 (+0.4%)
30 days high $47 · low $47
Volatility · stable
USD$47.02EUR€35.77
NM$47.0
Where to buy / sell
Search links · prices vary by venue
Buy this card
Played in EDH
EDHrec rank #29,136 · Fringe play
Variants
Gameplay
Artifact
{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.
Legalities
tlrnot legal
duellegal
brawlnot legal
pennynot legal
PreDHlegal
Rulings · 3
wotc
wotc
You don't get to look at the cards exiled with Knowledge Vault.
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.
Notes
Vault entries gain a personal note when you add this card to your binder — pull location, sleeve type, trade history. Sign in to start tracking.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Amy Weber
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
