Question: Spell reflect + Playing with Fire =?

[Skandranon]

I.E. does spell reflect create +3% damage target would have taken plus the +3% damage you normally take from fire damage?

Yes, it does.

Trivia: prior to patch 2.1, Magtheridon's Shadow Grasp (from clicking manticron cubes) and Scalding Water in SSC were considered DoT effects dealt by the player and received by the player. Mages with Playing with Fire received +1.609% damage from those effects.