Pyreheart Wolf {2}{R}
Creature — Wolf
Whenever this creature attacks, creatures you control gain menace until end of turn. (They can't be blocked except by two or more creatures.)
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)
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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.
Company Commander 91%
$2.52#6289
"Whenever this creature attacks, creatures you control gain deathtouch until end of turn."
Blood-Chin Rager 91%
$0.20#12954
"Whenever this creature attacks, Warrior creatures you control gain menace until end of turn."
Ankle Shanker 85%
$0.35#9493
"Whenever this creature attacks, creatures you control gain first strike and deathtouch until end of turn."
Smogsteed Rider 84%
$0.21#24481
"Whenever this creature attacks, each other attacking creature gains fear until end of turn."