Everan's Scorching Serpents

You summon a serpent made of flames to burn and constrict one creature you can see within range. The target must make a Strenggth saving throw. On a failed save, the target takes 4d6 fire damage and is grappled by the fiery serpent. On a successful save, the target takes half the damage and isn't grappled. At the end of each of the grappled target's turns, it takes 2d6 fire damage. A creature grappled by the fiery serpent can use it's action to make Strength or Dexterity check (the target's choice) against your spell save DC. If it succeeds, it is no longer grappled, and the spell ends on it.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, you can target one additional creature for each slot level above 3rd. The targets must be within 30 feet of each other when you target them.