Brute Force

Assault Specialist: 3rd, 5th, 9th, 13th, and 17th level Once per turn, when you deal damage with a weapon, you can deal an additional 1d4 damage of the same type as the weapon's damage. If this damage would affect multiple creatures, you can only apply this damage bonus to one of them. This damage increases to 1d6 at 5th level, 1d8 at 9th level, 1d10 at 13th level, and 1d12 at 17th level.