Byrke, Long Ear of the Law {4}{G}{W}
Legendary Creature — Rabbit Soldier
Vigilance
When Byrke enters, put a +1/+1 counter on each of up to two target creatures.
Whenever a creature you control with a +1/+1 counter on it attacks, double the number of +1/+1 counters 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.
Rishkar, Peema Renegade 100%
$0.19#828
"When this card enters, put a +1/+1 counter on each of up to two target creatures."
Alharu, Solemn Ritualist 90%
$0.18#14493
"When this card enters, put a +1/+1 counter on each of up to two other target creatures."
Big Mother Mouser 82%
$2.07#6054
"Whenever this creature attacks, double the number of +1/+1 counters on it."