From Aura Kingdom Wiki
The Sorcerer class deals with debuffing the opponent and Damage-over-time (DoT) attacks.
Damage: Damage does not affect DoT skills and therefore generally are not recommended for this class.
Critical: Good, in conjunction with speed. DoT skills are affected by crit rate.
Speed: Good, in conjunction with critical
Defense: Most recommended for PvE.
Health: Recommended when Defense is high (50% or more).
Evade: Not recommended for PvE, and only slightly for PvP; Sorcerers are not a naturally high-EVA class, like Duelists.