Lightning-Core Excavator 
Artifact Creature — Golem
{5}, {T}, Sacrifice this creature: It deals 3 damage to any target.
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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.
Skull Catapult 85%
#25403
"{1}, {T}, Sacrifice a creature: This artifact deals 2 damage to any target."