Arcane Rage

When you first get this spell you choose from 4 elemental magic types, fire, water, earth, and air. Every 2 spell levels you get another elemental magic type and the spell gets bigger. At the base stage it is a 5 ft. Orb that you can fire at opponents. And every 2 spell levels it increases in size by 5 ft. At spell level 9, it becomes its final size at a 40 ft. sphere that you can send launching downward at your opponents. The damage at base level is 3 d8 and you add on 1 d8 every 2 levels. Enemies will have to do a dex save and if successful they take half the damage. At the final size you will not need to roll to hit if the opponent is not bigger than 40. ft in diameter.