The original Niv-Mizzet, the Firemind appeared in Guildpact, in 2006.
The original art was by Todd Lockwood.
Ravnica Remastered
30th Anniversary Play Promos
Commander 2020
GRN Guild Kit
Masters 25
Commander 2017
Modern Masters 2015
Duel Decks: Izzet vs. Golgari
Champs and States
Guildpact