Pack Attack {2}{R}
Instant
Attacking creatures get +X/+0 until end of turn, where X is the number of players being attacked.
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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.
Dinosaur Stampede 83%
$0.27#15862
"Attacking creatures get +2/+0 until end of turn. Dinosaurs you control gain trample until end of turn."
Tears of Rage 80%
$0.25#19073
"Attacking creatures you control get +X/+0 until end of turn, where X is the number of attacking creatures. Sacrifice those creatures at the beginning of the next end step."