Unexpected Potential
Conspiracy
Hidden agenda (Start the game with this conspiracy face down in the command zone and secretly choose a card name. You may turn this conspiracy face up any time and reveal that name.)
You may spend mana as though it were mana of any color to cast spells with the chosen name.
click a line to search just that ability, click more to combine them
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.
Nathan Drake, Treasure Hunter 98%
$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."
Manascape Refractor 90%
$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."
Case File Auditor 88%
$0.14#23667
"You may spend mana as though it were mana of any color to cast Case spells."
Oath of Nissa 86%
$0.50#7671
"You may spend mana as though it were mana of any color to cast planeswalker spells."
Hogaak, Arisen Necropolis 85%
$1.27#10356
"You can't spend mana to cast this spell."
+1 more matching line
Quicksilver Elemental 85%
$23.98#8111
"You may spend blue mana as though it were mana of any color to pay the activation costs of this creature's abilities."
Agatha's Soul Cauldron 84%
$37.63#1383
"You may spend mana as though it were mana of any color to activate abilities of creatures you control."
Celestial Dawn 82%
$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."