Writhing Grapple

The user speaks a word and points at a solid surface within 20ft of the user, the material ignites and burns to dust and smoke. A moment later a five foot circular portal described by the caster opens and a swarm of tendrils also described by the caster burst forth. The tendrils have 2d6 health and are dispelled when their hp reaches zero or if a dispel magic spell of the same cast level or greater is used on it. When a creature starts their turn within five feet of the tendrils they will attempt to grapple any creature in that range, forcing them to make a DC10 strength saving throw to avoid being pulled into the center of the five foot radius. If a creature starts their turn on the same spot as the portal it takes 1d6 bludgeoning damage and 1d6 acid damage. Any attacks made while in this position are made with disadvantage the creature may make a DC12 Strength saving throw when attacking to remove the disadvantage or a DC15 strength saving throw to escape and move with quarter speed.

Can upcast to 6th, 9th, and 12th level to increase the damage dealt by 1d6 bludgeoning and 1d6 acid.