Does the Wizard Talent Conflagration work with weapons with +Fire Damage?
Solution 1:
Skills that state "% weapon damage" will deal the elemental damage from a weapon. Skills that state "% weapon damage as (element)" will not. So the weapon's fire damage would come through with Spectral Blade, but not with Magic Missile or Ray of Frost.
If the skill deals fire damage, either "naturally" or from a weapon effect, it should activate Conflagration.
Some sources here, here, here.