Herald of Torment {1}{B}{B}
Enchantment Creature — Demon
Bestow {3}{B}{B} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.)
Flying
At the beginning of your upkeep, you lose 1 life.
Enchanted creature gets +3/+3 and has flying.
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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.
Pitiless Horde 99%
$0.14#22563
"At the beginning of your upkeep, you lose 2 life."
+1 more matching line
Grinning Demon 99%
$3.72#19673
"At the beginning of your upkeep, you lose 2 life."
+1 more matching line
Scourge of Numai 97%
$0.27#28809
"At the beginning of your upkeep, you lose 2 life if you don't control an Ogre."
Mindwrack Demon 96%
$0.38#19202
"At the beginning of your upkeep, you lose 4 life unless there are four or more card types among cards in your graveyard."
The One Ring 94%
$101.85#90
"At the beginning of your upkeep, you lose 1 life for each burden counter on this card."