11 cards where the artist name includes “william simpson”

Beacon Hawk (Dissension #3)
Bound in Silence (Time Spiral Remastered #10)
Caregiver (Ravnica: City of Guilds #6)
Fire Dragon (Masters Edition II #125)
Paladin of Prahv (Duel Decks: Knights vs. Dragons #22)
Palliation Accord (Dissension #122)
Proclamation of Rebirth (Dissension #15)
Samite Censer-Bearer (Future Sight #15)
Spotted Griffin (Masters Edition IV #28)
Stone-Seeder Hierophant (Ravnica: City of Guilds #184)
Vedalken Aethermage (Future Sight #61)

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