Greater Harvester {2}{B}{B}{B}
Creature — Horror
At the beginning of your upkeep, sacrifice a permanent.
Whenever this creature deals combat damage to a player, that player sacrifices two permanents of their choice.
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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.
Akki Underminer 88%
$0.15#22722
"Whenever this creature deals combat damage to a player, that player sacrifices a permanent of their choice."
Furnace Scamp 88%
$0.10#26500
"Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, this creature deals 3 damage to that player."
Haunted Cadaver 87%
$0.12#27339
"Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, that player discards three cards."
Demon of Loathing 86%
$0.46#8186
"Whenever this creature deals combat damage to a player, that player sacrifices a creature of their choice."
Cabal Executioner 86%
$0.21#25603
"Whenever this creature deals combat damage to a player, that player sacrifices a creature of their choice."
Aspiring Champion 85%
$0.45#9774
"When this creature deals combat damage to a player, sacrifice it. If you do, reveal cards from the top of your library until you reveal a creature card. Put that card onto the battlefield, then shuffle the rest into your library. If that creature is a Demon, it deals damage equal to its power to each opponent."
Cacophony Scamp 85%
$0.28#11681
"Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, proliferate."
Impaler Shrike 82%
$0.11#19839
"Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, draw three cards."
Living Lore 82%
$0.10#23263
"Whenever this creature deals combat damage, you may sacrifice it. If you do, you may cast the exiled card without paying its mana cost."
Servant of the Stinger 81%
$0.22#10122
"Whenever this creature deals combat damage to a player, if you've committed a crime this turn, you may sacrifice this creature. If you do, search your library for a card, put it into your hand, then shuffle."