Stensia Masquerade {2}{R}
Enchantment
Attacking creatures you control have first strike.
Whenever a Vampire you control deals combat damage to a player, put a +1/+1 counter on it.
Madness {2}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
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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.
Rakish Heir 100%
$0.34#6321
"Whenever a Vampire you control deals combat damage to a player, put a +1/+1 counter on it."
Aragorn, Hornburg Hero 92%
$3.85#6584
"Attacking creatures you control have first strike and renown 1."
Okoye, Dora Milaje Leader 90%
$0.22#22642
"Attacking creature tokens you control have first strike."