Akki Underminer {3}{R}
Creature — Goblin Rogue Shaman
Whenever this creature deals combat damage to a player, that player sacrifices a permanent 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.
Drinker of Sorrow 90%
$2.83#12722
"Whenever this creature deals combat damage, sacrifice a permanent."
Greater Harvester 88%
$1.71#13056
"Whenever this creature deals combat damage to a player, that player sacrifices two permanents of their choice."
Silverclad Ferocidons 88%
$2.58#5293
"Whenever this creature is dealt damage, each opponent sacrifices a permanent of their choice."
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."
Cacophony Scamp 86%
$0.28#11681
"Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, proliferate."
Phyrexian Totem 85%
$0.25#23770
"Whenever this permanent is dealt damage, if it's a creature, sacrifice that many permanents."
Servant of the Stinger 84%
$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."
Demon of Loathing 84%
$0.46#8186
"Whenever this creature deals combat damage to a player, that player sacrifices a creature of their choice."
Cabal Executioner 84%
$0.21#25603
"Whenever this creature deals combat damage to a player, that player sacrifices a creature of their choice."
Aspiring Champion 84%
$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."
Shard of the Void Dragon 84%
$2.53#9574
"Whenever this creature attacks, each opponent sacrifices a nonland permanent of their choice."
Living Lore 84%
$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."
Wanderwine Prophets 83%
$15.92#9646
"Whenever this creature deals combat damage to a player, you may sacrifice a Merfolk. If you do, take an extra turn after this one."
Phyrexian Negator 81%
#10209
"Whenever this creature is dealt damage, sacrifice that many permanents."
Furnace Scamp 81%
$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."