Bloodmad Vampire {2}{R}
Creature — Vampire Berserker
Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.
Madness {1}{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.
Bloodcrazed Neonate 100%
$0.13#22367
"Whenever this creature deals combat damage to a player, put a +1/+1 counter on it."
Slith Ascendant 100%
$0.05#24600
"Whenever this creature deals combat damage to a player, put a +1/+1 counter on it."
Heirs of Stromkirk 100%
$0.11#23476
"Whenever this creature deals combat damage to a player, put a +1/+1 counter on it."
Slith Strider 100%
$0.10#27715
"Whenever this creature deals combat damage to a player, put a +1/+1 counter on it."
Erdwal Ripper 100%
$0.25#25110
"Whenever this creature deals combat damage to a player, put a +1/+1 counter on it."