Flaming Burst

Flaming Burst (DC 27)
Strong evocation; CL 12th; Price +2 bonus
Description
A flaming burst weapon functions as a flaming weapon that also explodes with flame upon striking a successful critical hit. In addition to the extra fire damage from the flaming ability, a flaming burst weapon deals an extra 2d10 points of fire damage on a successful critical hit.

Even if the flaming ability is not active, the weapon still deals its extra fire damage on a successful critical hit.
Construction
Craft Magic Arms and Armor, 2nd level fire spell

OPEN GAME LICENSE Version 1.0a - All text is Open Game Content.