Ledev Champion {1}{G}{W}
Creature — Elf Knight
Whenever this creature attacks, you may tap any number of untapped creatures you control. This creature gets +1/+1 until end of turn for each creature tapped this way.
{3}{G}{W}: Create a 1/1 white Soldier creature token with lifelink.
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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.
Siege Striker 100%
$0.16#23847
"Whenever this creature attacks, you may tap any number of untapped creatures you control. This creature gets +1/+1 until end of turn for each creature tapped this way."
Orphans of the Wheat 96%
$0.08#21995
"Whenever this creature attacks, tap any number of untapped creatures you control. This creature gets +1/+1 until end of turn for each creature tapped this way."