Fist of Suns 
Artifact
£3.79 #4388 0.24 22.3 years
You may pay 
rather than pay the mana cost for spells you cast.
rather than pay the mana cost for spells you cast.Click a line or tag to filter
Cards similar to Fist of Suns 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.
Leyline of Mutation100%
£0.21↓#6298↓0.36↑2.0 years↓
"You may pay rather than pay the mana cost for spells you cast."
rather than pay the mana cost for spells you cast."
Jodah, Archmage Eternal98%
£0.43↓#5662↓1.01↑8.4 years↓
"You may pay rather than pay the mana cost for spells you cast."
rather than pay the mana cost for spells you cast."