Arcane Nuke

Arcane nuke is a suicide spell that uses all the arcane energy in a 4-mile radius of the blast zone. When cast the caster themselves explode in a violent blast that disintegrates everything in a 150ft radius and dealing 20d10 fire or ice damage, casters choice and 35d12 force damage to everything within a 10-mile radius unless they make the save taking half damage. The saving throw is a strength roll and the caster cannot be resurrected without the use of a wish spell and always die when the spell is used. After the effects are complete the 4-mile radius acts as an anti-magic zone spells cannot be cast here for 2d4 years. The blast if survived will also knock you prone until you stand.