---
name: "Thassa's Oracle"
mana_cost: "{U}{U}"
cmc: 2
type_line: "Creature — Merfolk Wizard"
colors: ["U"]
color_identity: ["U"]
keywords: []
set: "THB"
set_name: "Theros Beyond Death"
collector_number: "73"
rarity: "rare"
artist: "Jesper Ejsing"
oracle_id: "1de1b591-a73f-4974-b507-8c63e07a0868"
canonical_url: "https://avascry.com/printing/thassas-oracle-thb"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Thassa's Oracle
- **Mana Cost:** `{U}{U}` (CMC: 2)
- **Type:** Creature — Merfolk Wizard
- **Power/Toughness:** 1/3

## Oracle Text
When this creature enters, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your library and the rest on the bottom of your library in a random order. If X is greater than or equal to the number of cards in your library, you win the game. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)

## Top 4096-Dim Neural Synergies
1. [Sea Gate Oracle](/printing/sea-gate-oracle-ddm.md) — Creature — Human Wizard
2. [Augur of Bolas](/printing/augur-of-bolas-c13.md) — Creature — Merfolk Wizard
3. [Pondering Mage](/printing/pondering-mage-j21.md) — Creature — Human Wizard
4. [Rootwater Mystic](/printing/rootwater-mystic-exo.md) — Creature — Merfolk Wizard
5. [Puresight Merrow](/printing/puresight-merrow-plst.md) — Creature — Merfolk Wizard
6. [Eclipsed Merrow](/printing/eclipsed-merrow-ecl.md) — Creature — Merfolk Scout

## Printing Details
- **Set:** Theros Beyond Death (THB) #73
- **Rarity:** Rare
- **Artist:** Jesper Ejsing
- **Total Printings:** 17 across all historical editions

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