Eldritch form

A spell allowing those who deal with the fiend to trade their bodies for power. Once incantated, their bodies will double in size, mass and strength and all unarmed attacks deal 2X damage. All attacks using melee weapons add an extra d8 damage. from level 8 onwards, the attack deals 3X damage and a d12 for melee weapons. at level 8 your character can choose between 'Demon's Claws' which transfigure the players hands into demonic claws dealing 2d10 damage or the 'Demon's Wings' which transfigure the back of the players already changed body into gigantic wings which double speed and add +5 to their dexterity as well as enabling flight.

in order to dodge 'Demon's Claws' players must roll a dexterity saving throw of 12 or higher.