Rabid Rats {1}{B}
Creature — Rat
{T}: Target blocking creature gets -1/-1 until end of turn.
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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.
Silvergill Douser 87%
$0.14#22167
"{T}: Target creature gets -X/-0 until end of turn, where X is the number of Merfolk and/or Faeries you control."
Bloodthirsty Ogre 84%
$0.11#29121
"{T}: Target creature gets -X/-X until end of turn, where X is the number of devotion counters on this creature. Activate only if you control a Demon."