Grimlore's Grimoire
4-level Evocation
You summon a fiery floor of bubbling lava below your feet.
Each creature other than you in that area must make a
Dexterity saving throw. On a failed save, a creature takes
4d10 fire damage and may only move up to half of their
movement speed until the end of their next turn. Creatures
that are within 5 feet of you must make the Dexterity saving
throw with disadvantage. Creatures take half damage and do
not lose any movement speed on a successful saving throw.
At higher levels: When you cast this spell using a spell
slot of 5th level or higher, the radius of the spell increases by
5 feet for every slot level above 4th.