Thassa's Oracle 
Creature — Merfolk Wizard
$20.25 #435 2.59 6.6 years
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.)
in the mana costs of permanents you control counts toward your devotion to blue.)Click a line or tag to filter
Cards similar to Thassa's Oracle expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Voda Sea Scavenger76%
$0.08↓#27006↓0.31↓4.0 years↓
"When this creature enters, look at the top X cards of your library, where X is the number of basic land types among lands you control. You may put one of those cards on top of your library. Put the rest on the bottom of your library in a random order."
Telling Time72%
$0.22↓#5654↓0.63↓20.9 years↑
"Look at the top three cards of your library. Put one of those cards into your hand, one on top of your library, and one on the bottom of your library."
Sage of Days70%
$0.07↓#24801↓0.00↓2.8 years↓
"When this creature enters, look at the top three cards of your library. You may put one of those cards back on top of your library. Put the rest into your graveyard."