Giant's Grip

You have honed extraordinary strength and technique to wield oversized weapons with precision. You gain the following benefits:

• Oversized Wielding: You can wield two-handed weapons in one hand, treating them as one-handed weapons for all purposes (e.g., attack rolls, weapon damage, strength modifiers, etc.). 
• Off-Hand Mastery: When wielding a two-handed weapon in one hand, you can still make off-hand attacks with a one-handed weapon as if you were using the Two-Weapon Fighting style.
• Improved Heavy Expertise: If you are Small or smaller, you ignore the disadvantage on attack rolls when wielding heavy weapons. However, your movement speed is reduced by 10 feet while you are wielding these weapons.