Mighty Arms Mastery

You can wield a two-handed melee weapon with one hand and versatile melee weapons wielded with one hand use the larger of their dice. You can't wield a weapon in your other hand while doing so.
Additionally, once per turn when you make an attack with a melee weapon that has the two-handed or versatile property, you can target an addition creature with the same attack roll as long as the creature is within your reach and within 10 feet of the original target creature. Roll damage separately for both target creatures.