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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.)
Abilities, attacks, weakness & resistance
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Thassa's Oracle (SLD-1280) is a blue creature Merfolk Wizard from the Secret Lair Drop set printed as a normal variant. Its triggered ability looks at the top X cards of your library where X is your devotion to blue and can win the game immediately if X is at least your library size. Decks typically use it as a combo or finish piece by reducing their library or increasing blue devotion so the Oracle’s ability resolves into an instant win.
Catalog pricing data as of 26 Apr 2026, 05:12