Evercoat Ursine 

Creature — Elemental Bear
$0.43 #5065 0.43 2.2 years
Trample
Hideaway 3, hideaway 3 (When this creature enters, look at the top three cards of your library, exile one face down, then put the rest on the bottom in a random order. Then do it again.)
Whenever this creature deals combat damage to a player, if there are cards exiled with it, you may play one of them without paying its mana cost.
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Cards similar to Evercoat Ursine 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.
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$1.52↑#54390.53↑2.2 years
"Whenever this card deals combat damage to a player, exile cards from the top of your library until you exile a nonland card. You may cast that card by discarding a card rather than paying its mana cost."
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"Whenever this creature deals combat damage to a player, you may cast your commander from the command zone without paying its mana cost."
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$0.36↓#52851.24↑1.5 years
"Whenever this card deals combat damage to a player, exile the top X cards of their library, where X is the amount of damage dealt. You may cast any number of spells with mana value X or less from among them without paying their mana costs."