Acid Bomb

You create an acidic bomb at a point within range, where it explodes in a 10-foot-radius Sphere on your next turn. Each creature in that Sphere must succeed on a Dexterity saving throw. On failure, they take 2d8 acid damage and are knocked prone. On succeeding, they are only knocked prone.

If casted at spell level 9, the sphere expands to 5,000 feet, has a range distance of 5,001 feet, and deals 5d20 damage. It's also called an acid nuke now.

This spell was very lazy. Also range distance ignores walls.