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Rules guide · Artifact

Knowledge VaultHow it works & interactions with other cards

By the ManaCount desk· 2 min read· Masters Edition III· September 7, 2009
Carte Magic Knowledge Vault

Knowledge Vault is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

01

Official card text

{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.

How it works : Knowledge Vault

Original English text — Wizards of the Coast / Scryfall

  1. #1· Wizards of the Coast

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

    No other card is named in this ruling.

  2. #2· Wizards of the Coast

    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.

    No other card is named in this ruling.

  3. #3· Wizards of the Coast

    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.

    No other card is named in this ruling.

02

Popular combos

Real combos played by the community, sorted by popularity.

Crackdown Construct
+Knowledge Vault
#1

Crackdown Construct + Knowledge Vault

Infinitely large creature
  1. 1Activate Knowledge Vault's ability.
  2. 2Hold priority and repeat this an arbitrarily large number of times.
  3. 3Resolve the Crackdown Construct triggers, making Crackdown Construct arbitrarily large.
03

Legal formats

legacyvintagecommanderoathbreakerduelpredh
0 Image

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Meta decks with Knowledge Vault

No archived Top 8 deck with this card yet.

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Official source