Loathsome Troll {3}{G}{G}
Creature — Troll
{3}{G}: Roll a d20. Activate only if this card is in your graveyard.
1—9 | Put this card on top of your library.
10—19 | Return this card to your hand.
20 | Return this card to the battlefield tapped.
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Cards that do something similar 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.
Esper Origins // Summon: Esper Maduin 84%
$1.04#5408
"Reveal the top card of your library. If it's a permanent card, put it into your hand."
Reason // Believe 82%
$0.23#14979
"Look at the top card of your library. You may put it onto the battlefield if it's a creature card. If you don't, put it into your hand."
Bag of Tricks 82%
$0.31#16133
"{4}{G}, {T}: Roll a d8. Reveal cards from the top of your library until you reveal a creature card with mana value equal to the result. Put that card onto the battlefield and the rest on the bottom of your library in a random order."
The Raven's Warning 81%
$0.23#17884
"You may put a card you own from outside the game on top of your library."