Squirming, ebony tentacles fill a 20-foot square on ground that you can see within range. For the
Duration, these tentacles turn the ground in the area into
Difficult Terrain.
When a creature enters the affected area for the first time on a turn or starts its turn there, the creature must succeed on a
Dexterity saving throw or take 3d6 bludgeoning damage and be
Restrained by the tentacles until the spell ends. A creature that starts its turn in the area and is already
Restrained by the tentacles takes 3d6 bludgeoning damage.
A creature
Restrained by the tentacles can use its
Action to make a
Strength or
Dexterity check (its choice) against your spell save DC. On a success, it frees itself.