Asmodeus's Consecration

You bathe yourself in bright red and orange flames. At the end of your turn, any creature within 10 ft of you must make a Dexterity saving throw. A target takes 2d8 fire damage on a failed save, or half as much damage on a successful one. If a creature moves within range for the first time, it must also make the saving throw. Creatures will only suffer this damage once per cast of the spell.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 for each slot level above 2nd.