For what it's worth, Return averages out to be stronger than Slash.
If only it could get Sniper...
But slash would ignore defense's right? wouldn;t that make it stronger, or still the same?
So I guess having a 50% chance to crit with return may be better instead of the 100% chance with slash?
And yes if the duck got sniper this would be amazing. Maybe a way to pass sniper to the duck with a move? Anyone with sniper also gets skill swap?