Titan's Grip

Prerequisite: You must have the Great Weapon Duelist feat
You have become rather talented at wielding great weapons on their own. Even more so, you have managed to grow skilled enough to wield two at once. This training has granted you the following features.

• While wielding two heavy melee weapons in either hand, you are able to use two-weapon fighting.{When you take the attack action and attack with a two-handed/heavy melee weapon that you’re holding in one hand, you can as part of the same action to attack with a different two-handed/heavy melee weapon that you’re holding in the other hand.}
• You have learned to master using your weapons weight to your advantage, striking in quick succession, knocking people off guard. Every time you hit a creature with a heavy melee weapon, gain a stack of Overwhelm. You deal an additional 2 points of damage on all attacks made with heavy melee weapons for every stack of Overwhelm you have at the time of making the attack. You lose all of your stacks of Overwhelm at the beginning of your turns, or when you miss an attack.
• You can draw or stow two heavy weapons when you would normally be able to draw or stow only one.