Codie, Vociferous Codex 
Legendary Artifact Creature — Book Construct
You can't cast permanent spells.
{4}, {T}: Add {W}{U}{B}{R}{G}. When you next cast a spell this turn, exile cards from the top of your library until you exile an instant or sorcery card with lesser mana value. Until end of turn, you may cast that card without paying its mana cost. Put each other card exiled this way on the bottom of your library in a random order.
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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.
Jegantha, the Wellspring 89%
$0.29#3864
"{T}: Add {W}{U}{B}{R}{G}. This mana can't be spent to pay generic mana costs."
Mutual Destruction 84%
$0.12#20353
"This spell has flash as long as you control a permanent with flash."
Ward of Lights 84%
$0.25#21777
"You may cast this spell as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step."
Relic Ward 84%
$0.14#27571
"You may cast this spell as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step."
Soar 84%
$0.08#30872
"You may cast this spell as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step."
Grave Servitude 84%
$0.12#29813
"You may cast this spell as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step."
Necromancy 84%
$21.03#993
"You may cast this spell as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step."
Parapet 84%
$0.09#25749
"You may cast this spell as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step."
Mystic Veil 84%
$0.14#22226
"You may cast this spell as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step."
Lightning Reflexes 84%
$0.05#24954
"You may cast this spell as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step."
Spider Climb 84%
$0.12#27032
"You may cast this spell as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step."
Armor of Thorns 84%
#27557
"You may cast this spell as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step."
Flash Photography 84%
$37.98#7302
"You may cast this spell as though it had flash if it targets a permanent you control."
Cornered Market 83%
$0.59#26633
"Players can't cast spells with the same name as a nontoken permanent."
Molten Exhale 83%
$0.15#13599
"You may cast this spell as though it had flash if you behold a Dragon as an additional cost to cast it."