Love on the Battlefield {1}{U}{R}
Enchantment
Whenever you attack with exactly two creatures, those creatures gain first strike until end of turn, then draw a card. Whenever either of those creatures deals combat damage to a player this combat, put 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.
Gideon, the Oathsworn 85%
#17669
"Whenever you attack with two or more non-this card creatures, put a +1/+1 counter on each of those creatures."
Captain America, Skybound 80%
$2.99#20362
"Whenever this card and at least two other creatures attack, put a +1/+1 counter on each attacking creature. They gain indestructible until end of turn."