---
name: "Knowledge Vault"
mana_cost: "{4}"
cmc: 4
type_line: "Artifact"
colors: []
color_identity: []
keywords: []
set: "LEG"
set_name: "Legends"
collector_number: "281"
rarity: "rare"
artist: "Amy Weber"
oracle_id: "77d3cc31-837a-408a-b7f8-5aa9de78e1b7"
canonical_url: "https://avascry.com/printing/knowledge-vault-leg"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Knowledge Vault
- **Mana Cost:** `{4}` (CMC: 4)
- **Type:** Artifact

## Oracle 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.

## Top 4096-Dim Neural Synergies
1. [Memorial Vault](/printing/memorial-vault-peoe.md) — Artifact
2. [Kyren Archive](/printing/kyren-archive-mmq.md) — Artifact — Book
3. [Oracle's Vault](/printing/oracles-vault-pakh.md) — Artifact
4. [Synod Sanctum](/printing/synod-sanctum-mrd.md) — Artifact
5. [Memory Vessel](/printing/memory-vessel-big.md) — Artifact
6. [Phyrexian Vault](/printing/phyrexian-vault-mir.md) — Artifact

## Printing Details
- **Set:** Legends (LEG) #281
- **Rarity:** Rare
- **Artist:** Amy Weber
- **Total Printings:** 3 across all historical editions

## Format Legalities
Commander: `legal` | Standard: `not_legal` | Modern: `not_legal` | Pioneer: `not_legal` | Legacy: `legal` | Vintage: `legal` | Pauper: `not_legal` | Penny: `not_legal`