Ugin's Construct 
Artifact Creature — Construct
$0.12 #27402 0.00 11.6 years
When this creature enters, sacrifice a permanent that's one or more colors.
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Cards similar to Ugin's Construct 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.
Abjure72%
$2.04↑#6223↑1.07↑29.2 years↑
"As an additional cost to cast this spell, sacrifice a blue permanent."
Renounce the Guilds72%
$0.25↑#229190.47↑13.3 years↑
"Each player sacrifices a multicolored permanent of their choice."
Rite of Oblivion71%
$0.39↑#3814↑0.23↑4.9 years↓
"As an additional cost to cast this spell, sacrifice a nonland permanent."
Shredder's Armor71%
$0.20↑#19795↑0.000.5 years↓
"Equip—Sacrifice another nonland permanent. Activate only once each turn."
Fatal Grudge70%
$0.26↑#11994↑0.40↑4.4 years↓
"As an additional cost to cast this spell, sacrifice a nonland permanent."