Automatic turret

A Small turret appears for the duration on an unoccupied surface that you can see within range. The turret occupies that space and has an AC of 12 and 5 hit points, and it appears in a form of your choosing.

Any enemy that moves to a space within 30 feet of the turret for the first time on a turn or starts its turn there takes 8 Piercing damage if their AC is less than your Spell Save DC + the Spell’s Level or takes half damage. The turret deactivates when it has dealt a total of 32 damage.

Turret damage per shot increases by 4, total damage increases by 16, and max HP increases by 10 for each level beyond the first.