Great Weapon Opportunist

You've spent a long time perfecting the art of great weapon fighting. With this training under your belt, you're capable of seizing even the smallest drops in your opponent's guard.

• When you are wielding a two-handed melee weapon (or versatile melee weapon with two hands), attacks you make with that weapon score a critical hit on a roll of 19 or 20.
• On your turn, when you score a critical hit with a two-handed melee weapon (or a versatile melee weapon you're wielding with two hands) or reduce a creature to 0 hit points with one, you can make one melee weapon attack as a bonus action.