Delraich 

Creature — Horror
You may sacrifice three black creatures rather than pay this spell's mana cost.
Trample
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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.
Phyrexian Tribute 81%
$2.41#21615
"As an additional cost to cast this spell, sacrifice two creatures."
Bankrupt in Blood 81%
$0.25#12395
"As an additional cost to cast this spell, sacrifice two creatures."