---
name: "Knowledge Pool"
mana_cost: "{6}"
cmc: 6
type_line: "Artifact"
colors: []
color_identity: []
keywords: ["Imprint"]
set: "MBS"
set_name: "Mirrodin Besieged"
collector_number: "111"
rarity: "rare"
artist: "Mike Bierek"
oracle_id: "cb53bd72-dee8-46fa-b0f9-1eee3a99379a"
canonical_url: "https://avascry.com/printing/knowledge-pool-mbs"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# Knowledge Pool
- **Mana Cost:** `{6}` (CMC: 6)
- **Type:** Artifact
- **Keywords:** Imprint

## Oracle Text
Imprint — When this artifact enters, each player exiles the top three cards of their library.
Whenever a player casts a spell from their hand, that player exiles it. If the player does, they may cast a spell from among other cards exiled with this artifact without paying its mana cost.

## Top 4096-Dim Neural Synergies
1. [River Song's Diary](/printing/river-songs-diary-who.md) — Artifact — Book
2. [Knowledge Vault](/printing/knowledge-vault-leg.md) — Artifact
3. [Thought Prison](/printing/thought-prison-mrd.md) — Artifact
4. [Panoptic Mirror](/printing/panoptic-mirror-dst.md) — Artifact
5. [Memory Vessel](/printing/memory-vessel-big.md) — Artifact
6. [Spellweaver Helix](/printing/spellweaver-helix-mrd.md) — Artifact

## Printing Details
- **Set:** Mirrodin Besieged (MBS) #111
- **Rarity:** Rare
- **Artist:** Mike Bierek
- **Total Printings:** 11 across all historical editions

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