Allow Power Whip
Allow ThunderPunch
Allow IcePunch
I want to see how this pans out. Physical BoltBeam seems awesome with something like Shell Smash or even Swords Dance. Hell, even Agility!
Power Whip is a great addition to Necturna. Grass types don't have that many great Physical STAB moves anyway. Power Whip is balanced by it's accuracy and therefore rivaled by Seed Bomb and Horn Leech. Like the whole Fire Blast v. Flamethrower thing. Raw power v. accuracy.