---
name: "Ancestral Knowledge"
mana_cost: "{1}{U}"
cmc: 2
type_line: "Enchantment"
colors: ["U"]
color_identity: ["U"]
keywords: ["Cumulative upkeep"]
set: "WTH"
set_name: "Weatherlight"
collector_number: "32"
rarity: "rare"
artist: "Colin MacNeil"
oracle_id: "2786f210-ec64-46ea-9a7f-b03759fb1dae"
canonical_url: "https://avascry.com/printing/ancestral-knowledge-wth"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Ancestral Knowledge
- **Mana Cost:** `{1}{U}` (CMC: 2)
- **Type:** Enchantment
- **Keywords:** Cumulative upkeep

## Oracle Text
Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
When this enchantment enters, look at the top ten cards of your library, then exile any number of them and put the rest back on top of your library in any order.
When this enchantment leaves the battlefield, shuffle your library.

## Top 4096-Dim Neural Synergies
1. [Survivor of the Unseen](/printing/survivor-of-the-unseen-csp.md) — Creature — Human Wizard
2. [Mesmeric Trance](/printing/mesmeric-trance-me2.md) — Enchantment
3. [Thought Lash](/printing/thought-lash-me2.md) — Enchantment
4. [Hibernation's End](/printing/hibernations-end-csp.md) — Enchantment
5. [Phyrexian Etchings](/printing/phyrexian-etchings-plst.md) — Enchantment
6. [Ancestral Memories](/printing/ancestral-memories-7ed.md) — Sorcery

## Printing Details
- **Set:** Weatherlight (WTH) #32
- **Rarity:** Rare
- **Artist:** Colin MacNeil
- **Total Printings:** 9 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`