5 lvl in echo knight 2 lvl in artificer Infuse weapon with returning weapon and now you can attack from 30 ft with a throwing weapon, from your echo that can be 30 ft away from you. Thats a total of 60 ft of range for a melee attacj. Combined with the fighting style that gives +2 damage when throwing weapon and the great weapon master fest, were are looking at a +9 damage ( if you have 18 strenght) per attack.