Goblin Boom Keg {4}
Artifact
At the beginning of your upkeep, sacrifice this artifact.
When this artifact is put into a graveyard from the battlefield, 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.
Forethought Amulet 89%
$21.20#31475
"At the beginning of your upkeep, sacrifice this artifact unless you pay {3}."
Smoke Bomb 87%
$0.34#4485
"At the beginning of your upkeep, sacrifice this artifact. When you do, target creature you control can't be blocked this turn."
Retributive Wand 86%
$0.13#22831
"When this artifact is put into a graveyard from the battlefield, it deals 5 damage to any target."
Disruption Aura 83%
$0.06#29911
"Enchanted artifact has "At the beginning of your upkeep, sacrifice this artifact unless you pay its mana cost.""
Molder Slug 83%
$0.47#18747
"At the beginning of each player's upkeep, that player sacrifices an artifact of their choice."
Kataki, War's Wage 82%
$1.65#9468
"All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {1}.""
Serrated Arrows 81%
$0.57#16974
"At the beginning of your upkeep, if there are no arrowhead counters on this artifact, sacrifice it."