Improved Great Weapon Fighting

Fighting Style Feat (Prerequisite: Fighting Style Feature)

When you roll a 1 or 2 on a non-rite damage die for an attack you make with a melee weapon that you are wielding with two hands, you can reroll the die and must use the new roll.
The weapon must have the two-handed or versatile property for you to gain this benefit, In addition weapons meeting these parameters use 1.5x strength mod (rounded down) when determining damage.