True Great Weapon Master

You've learned to put the weight of a weapon to your advantage, letting its momentum empower your strikes. You gain the following benefits:

• On your turn, when you score a critical hit with a melee weapon and/or reduce a creature to 0 hit points with a single attack, you can make one melee weapon attack with the same weapon, this can be repeated as long as target is within reach. (This replaces the ability of Great Weapon Master Feat).

• You can choose to add +15 damage to a single attack, but this can only be done once every short or long rest.

You gain one point in strength up to 22 max.