Gila Courser {2}{R}
Creature — Lizard Mount
Whenever this creature attacks while saddled, exile the top card of your library. Until the end of your next turn, you may play that card.
Saddle 1 (Tap any number of other creatures you control with total power 1 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)
click a line to search just that ability, click more to combine them
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.
Synth Eradicator 90%
$0.32#8467
"Whenever this creature attacks, exile the top card of your library. You may get {E}{E} . If you don't, you may play that card this turn."
Caves of Chaos Adventurer 90%
$0.44#7374
"Whenever this creature attacks, exile the top card of your library. If you've completed a dungeon, you may play that card this turn without paying its mana cost. Otherwise, you may play that card this turn."
Mezzio Mugger 90%
$0.32#12165
"Whenever this creature attacks, exile the top card of each player's library. You may play those cards this turn, and you may spend mana as though it were mana of any color to cast those spells."
Robber of the Rich 89%
$1.52#10249
"Whenever this creature attacks, if defending player has more cards in hand than you, exile the top card of their library. During any turn you attacked with a Rogue, you may cast that card and you may spend mana as though it were mana of any color to cast that spell."
Bomat Courier 89%
$0.22#12903
"Whenever this creature attacks, exile the top card of your library face down."
Tempered in Solitude 85%
$0.26#12038
"Whenever a creature you control attacks alone, exile the top card of your library. You may play that card this turn."
Bioplasm 83%
$0.30#25170
"Whenever this creature attacks, exile the top card of your library. If it's a creature card, this creature gets +X/+Y until end of turn, where X is the exiled creature card's power and Y is its toughness."
Connecting the Dots 81%
$0.28#9758
"Whenever a creature you control attacks, exile the top card of your library face down."
Kami of Celebration 80%
$1.00#6590
"Whenever a modified creature you control attacks, exile the top card of your library. You may play that card this turn."