Ogre Marauder {1}{B}{B}
Creature — Ogre Warrior
Whenever this creature attacks, it gains "this creature can't be blocked" until end of turn unless defending player sacrifices a creature of their choice.
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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.
Yuan Shao's Infantry 94%
$5.31#31156
"Whenever this creature attacks alone, this creature can't be blocked this combat."
Xantid Swarm 89%
$3.88#13727
"Whenever this creature attacks, defending player can't cast spells this turn."
Smirking Spelljacker 89%
$2.79#6873
"Whenever this creature attacks, if a card is exiled with it, you may cast the exiled card without paying its mana cost."
Hobgoblin Captain 88%
$0.13#19164
"Whenever this creature attacks, if you attacked with creatures with total power 6 or greater this combat, this creature gains first strike until end of turn."
Stromgald Spy 88%
$0.15#29721
"Whenever this creature attacks and isn't blocked, you may have defending player play with their hand revealed for as long as this creature remains on the battlefield. If you do, this creature assigns no combat damage this turn."
Gutter Skulker // Gutter Shortcut 87%
$0.08#21571
"This creature can't be blocked as long as it's attacking alone."
Abyssal Nightstalker 87%
$0.50#27330
"Whenever this creature attacks and isn't blocked, defending player discards a card."
Bull-Rush Bruiser 87%
$0.09#25726
"Whenever this creature attacks, if your team controls another Warrior, this creature gains first strike until end of turn."
Flockchaser Phantom 86%
$0.28#13180
"Whenever this creature attacks, the next spell you cast this turn has convoke."
Creepy Puppeteer 86%
$0.19#25029
"Whenever this creature attacks, if you attacked with exactly one other creature this combat, you may have that creature's base power and toughness become 4/3 until end of turn."
Vampire Gourmand 86%
$0.22#7892
"Whenever this creature attacks, you may sacrifice another creature. If you do, draw a card and this creature can't be blocked this turn."
Mirror-Style Master 86%
$0.27#12093
"Whenever this creature attacks, for each attacking modified creature you control, create a tapped and attacking token that's a copy of that creature. Exile those tokens at end of combat."
Tilonalli's Skinshifter 86%
$0.26#22819
"Whenever this creature attacks, it becomes a copy of another target nonlegendary attacking creature until end of turn."
Smogsteed Rider 85%
$0.21#24481
"Whenever this creature attacks, each other attacking creature gains fear until end of turn."
Hardened Berserker 85%
$0.03#23580
"Whenever this creature attacks, the next spell you cast this turn costs {1} less to cast."
Fear of the Dark 85%
$1.72#12394
"Whenever this creature attacks, if defending player controls no Glimmer creatures, it gains menace and deathtouch until end of turn."
Dauthi Mindripper 85%
$0.26#22949
"Whenever this creature attacks and isn't blocked, you may sacrifice it. If you do, defending player discards three cards."