Reprinted 7x total; appeared once in a dedicated reprint set (Mystery Booster 2).
Clicking links to purchase cards directly supports ManaBleed via affiliate commissions at no extra cost to your order pool.
Thassa's Oracle
30-Day Market Trend
Paste this anywhere to show a live, auto-updating price widget for this card.
Oracle Data
in the mana costs of permanents you control counts toward your devotion to blue.)
Official Judge Precedents
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.
