Card

Thassa's Oracle

Mana cost {U}{U}

Creature — Merfolk Wizard 1/3

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.)

Game Changer: not allowed in brackets 1–2, counts as one of the three allowed in bracket 3. Part of 96 known combos, 14 of them two-card. 6 official rulings.

Commander
Legal
Game Changer
On the official list — none allowed in brackets 1–2, at most three in bracket 3.
Printing
Rare · THB · #73
Cheapest printing
€14.25
EDHREC salt
2.59
Color identity
Blue

Scryfall · EDHREC

Bracket

Why

  • On the official Game Changers list
  • Two-card combo with Demonic Consultation, Tainted Pact, Doomsday, Enter the Infinite, Hermit Druid, Leveler, Thought Lash, Paradigm Shift, Divining Witch, Mirror of Fate, Doomsday Excruciator, Phyrexian Devourer, Dance with Calamity, Sacred Guide (early with Demonic Consultation, Tainted Pact, Doomsday, Hermit Druid, Thought Lash, Paradigm Shift, Divining Witch, Mirror of Fate, Doomsday Excruciator, Phyrexian Devourer, Sacred Guide)

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

96 known combos, 14 of them two-card.

Combos: Commander Spellbook

Rulings

  • 2020-01-24 · Wizards of the Coast
    Colorless and generic mana symbols ({C}, {0}, {1}, {2}, {X}, and so on) in mana costs of permanents you control don't count toward your devotion to any color.
  • 2020-01-24 · Wizards of the Coast
    If you put an Aura on an opponent's permanent, you still control the Aura, and mana symbols in its mana cost count towards your devotion.
  • 2020-01-24 · Wizards of the Coast
    If an activated ability or triggered ability has an effect that depends on your devotion to a color, you count the number of mana symbols of that color among the mana costs of permanents you control as the ability resolves. The permanent with that ability will be counted if it's still on the battlefield at that time.
  • 2020-01-24 · Wizards of the Coast
    If your devotion to blue is zero at the time the triggered ability of Thassa's Oracle resolves, you don't look at or move any cards in your library. If you have no cards in your library, you win the game.
  • 2020-01-24 · Wizards of the Coast
    Hybrid mana symbols, monocolored hybrid mana symbols, and Phyrexian mana symbols do count toward your devotion to their color(s).
  • 2020-01-24 · Wizards of the Coast
    Mana symbols in the text boxes of permanents you control don't count toward your devotion to any color.

Rulings: Scryfall · Wizards of the Coast

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