Tilldor's Refulgent Ray

You launch a devastating, ray of brilliant energy that completely devastates a target with the combined might of both fire and electricity. Make a ranged attack roll. On a successful attack, the target takes 1d12 fire damage AND 1d12 electricity damage at once. 

When you cast this spell with a spell slot higher then 5th level, it increases in damage by a d12 for BOTH damage types. (For example, when cast with a 9th level spell slot, you deal 5d12 fire and 5d12 lightning damage instead of just 1d12) 

"Finally. After years of research, I have completed it; my magnum opus! This'll knock a dragon right out of the sky, I bet!" - Tilldor Emberquill, Compound Evocation Spell-Specialist.