Knowledge Vault (Masters Edition III #198)

Knowledge Vault {4}

Artifact

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

{0}: Sacrifice Knowledge Vault. If you do, discard your hand, then put all cards exiled with Knowledge Vault into their owner’s hand.

When Knowledge Vault leaves the battlefield, put all cards exiled with Knowledge Vault into their owner’s graveyard.

Illustrated by Amy Weber

Part of the Reserved List

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny
Notes and Rules Information for Knowledge Vault:
  • 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. (2008-10-01)
  • You don’t get to look at the cards exiled with Knowledge Vault. (2009-10-01)
  • 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. (2009-10-01)