Knowledge Vault
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.
- CMC
- 4
- Mana cost
- Color identity
- C
- Rarity
- uncommon
- Set
- Masters Edition III
- Price
- —
- EDHREC rank
- #29132
Knowledge Vault enters the battlefield and immediately starts banking cards — each activation exiles the top card of your library face-down, and when you cash out you draw all of them at once, paying only the accumulated cost in colorless mana. The catch is that if Knowledge Vault leaves the battlefield before you cash out, every banked card is gone forever, which makes it a premium target for removal and a natural combo piece with Crackdown Construct.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | not legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Commander is where Knowledge Vault does its best work — the slower pace gives you time to stack multiple activations before cashing out for a massive draw, and the colorless cost means it slots into any deck regardless of color identity. In Vintage and Legacy it's legal but rarely sees play; those formats move too fast for a setup piece that requires multiple untap steps and sits on the board begging to be destroyed. Knowledge Vault is a niche all-star in Commander and close to invisible everywhere else.
Key Combos
Combo lines featuring this card
Price Context
Current price
unknown tier
Pricing data for Knowledge Vault isn't currently available in our index, so check Scryfall or TCGPlayer for a live number before buying. Given its narrow combo appeal and the risk attached to leaving it on the battlefield, it tends to be a bulk rare rather than a premium pickup.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.