Thassa's Oracle 
Creature — Merfolk Wizard1/3
Oracle text (EN)
Creature — Merfolk Wizard
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 in the mana costs of permanents you control counts toward your devotion to blue.)
Printing details
- Set
- MB2 · 175
- Rarity
- Rare
- Language
- EN
- Artist
- Jesper Ejsing
- Released
- 2024-08-02
- Prices
- €14.43 · $21.08
Price history
The trend shows with at least 7 days of history.
- Cardmarket, trend
- CardTrader, Near Mint minimum (EN)
The history starts on October 28, 2026 and grows every day.
Show the data
| Date | Cardmarket, trend | CardTrader, Near Mint minimum (EN) |
|---|---|---|
| October 29, 2026 | €14.80 | €21.35 |
| October 28, 2026 | €14.43 | €21.35 |
Prices
| Source | Non-foil | Foil |
|---|---|---|
| Cardmarket | low €12.99 trend €14.80 30-day avg €14.53 | low €66.95 trend €67.36 30-day avg €87.85 |
| CardTrader (EN) | NM from €21.35 with Zero from €22.35 | NM from €66.59 with Zero from €90.59 |
| CardTrader (any language) | NM from €21.35 | NM from €66.59 |
Cardmarket updated Oct 29, 2026 · CardTrader updated Oct 29, 2026
Buy and look up
Legality
- standard Not legal
- pioneer Legal
- modern Legal
- legacy Legal
- vintage Legal
- commander Legal
- pauper Not legal
- alchemy Not legal
- brawl Legal
- competitivebrawl Legal
- duel Banned
- future Not legal
- gladiator Legal
- historic Banned
- oathbreaker Legal
- oldschool Not legal
- paupercommander Not legal
- penny Not legal
- predh Not legal
- premodern Not legal
- standardbrawl Not legal
- timeless Legal
- tlr Banned
Rulings
-
Colorless and generic mana symbols (
, 
, 
, 
, 
, and so on) in mana costs of permanents you control don't count toward your devotion to any color. -
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.
-
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.
-
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.
-
Hybrid mana symbols, monocolored hybrid mana symbols, and Phyrexian mana symbols do count toward your devotion to their color(s).
-
Mana symbols in the text boxes of permanents you control don't count toward your devotion to any color.