Infernal Orb

An orange orb of unstable energy surges between your hands. Make a ranged spell attack against a target you can see within range of the spell. If it hits, the target takes 9d10 incinerating damage. If the target is Scorched, the orb explodes in a 30-foot radius around it; creatures in the area must make a Dexterity saving throw. On a failure, an affected creature takes 8d10 incinerating damage.

If those creatures are also Scorched, each one triggers a new 20-foot explosion. Creatures in that new area must make a Dexterity saving throw, taking 7d10 incinerating damage on a failure.

At Higher Levels. When you cast this spell by spending Mana points equal to an 8th-level spell or higher, the incinerating damage increases by 1d10 for each spell level above 7th.