Ugin's Construct 
Artifact Creature — Construct
$0.11 #27775 0.00 11.8 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.
Renounce the Guilds72%
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"Each player sacrifices a multicolored permanent of their choice."
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"As an additional cost to cast this spell, sacrifice a blue permanent."
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"As an additional cost to cast this spell, sacrifice a nonland permanent."
Fatal Grudge70%
$0.16↑#12294↑0.25↑4.5 years↓
"As an additional cost to cast this spell, sacrifice a nonland permanent."