Chromatic Orrery {7}
Legendary Artifact
You may spend mana as though it were mana of any color.
{T}: Add {C}{C}{C}{C}{C}.
{5}, {T}: Draw a card for each color among permanents you control.
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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.
Rosheen Meanderer 97%
$0.36#12001
"{T}: Add {C}{C}{C}{C}. Spend this mana only on costs that contain {X}."
Circle of Elders 91%
$0.08#23093
"{T}: Add {C}{C}{C}. Activate only if creatures you control have total power 8 or greater."
Nathan Drake, Treasure Hunter 89%
$4.72#14996
"You may spend mana as though it were mana of any color to cast spells you don't own or to activate abilities of permanents you control but don't own."
Celestial Dawn 88%
$0.50#16954
"You may spend white mana as though it were mana of any color. You may spend other mana only as though it were colorless mana."
Case File Auditor 88%
$0.14#23667
"You may spend mana as though it were mana of any color to cast Case spells."
Manascape Refractor 85%
$1.38#10856
"You may spend mana as though it were mana of any color to pay the activation costs of this artifact's abilities."