Nova boy got buffed in 0.8.1 and remains the strongest sorc build around 400+ arena viable.
Leveling
Level with glacier and preparation node + gambler fallacy unique until you get Ashen crown
Leveling planner (does not include gear)
https://www.lastepochtools.com/planner/jQewMaor
Boss potential (Lightning)
Juiced empowered rahyeh with All res + bunch of hp
Arena
Dummy deeps
Arena pushing planner
https://www.lastepochtools.com/planner/wBExP9Q7
Lightning nova boy
https://www.lastepochtools.com/planner/volEgVAW