Elemental Blast

 Burst
An elemental weapon has been sheathed in an element and deals an additional 1d6 of elemental damage on a successful hit. In addition, critical hits deal an additional 1d10 elemental damage for a weapon with a x2 critical multiplier, 2d10 for a x3 critical multiplier and 3d10 for a x4 critical multiplier. Additionally, if you roll a 20 while attacking your target and confirm the critical hit, the weapon blasts your target, doing 4d6 more damage.