Ensnaring Serpents

A magical serpent springs forth from you and moves to the spells target. The target must succeed on a Strength saving throw or be restrained by the magical serpent until the spell ends. A Large or larger creature has advantage on this saving throw. If the target succeeds on the save, the serpent shatters into dust.

While restrained by this spell, the target takes 1d6 bludgeoning damage at the start of each of its turns as the serpent constricts tighter. A creature restrained by the serpent or one that can touch the creature can use its action to make a Strength check against your spell save DC. On a success, the target is freed. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the spell can effect one more target for each slot level above 1st.