Most played cards in Red Spells:

1 Decks
Infernal Tutor
4 copies - 4 average
Dark Ritual
4 copies - 4 average
Ponder
4 copies - 4 average
Preordain
4 copies - 4 average
Lotus Petal
4 copies - 4 average
Lion's Eye Diamond
4 copies - 4 average
Brainstorm
4 copies - 4 average
Cabal Ritual
4 copies - 4 average
Polluted Delta
4 copies - 4 average
Arclight Phoenix
3 copies - 3 average
Duress
3 copies - 3 average
Buried Alive
3 copies - 3 average
Echoing Truth
3 copies - 3 average
Thoughtseize
3 copies - 3 average
Surgical Extraction
2 copies - 2 average
Flooded Strand
2 copies - 2 average
Dark Confidant
2 copies - 2 average
Engineered Explosives
2 copies - 2 average
Underground Sea
2 copies - 2 average
Flusterstorm
2 copies - 2 average