Transmutation Cantrip (Druid, Warlock, Sorcerer)

Casting Time: Bonus Action
Range: 20 feet
Components: V, S, M (a pebble with a hole in it)
Duration: Instantaneous

You turn your gaze on one creature you can see within range. If the target can see your eyes, their body stiffens and cracks as if it were turning to stone. The target must succeed on a Constitution saving throw or take Necrotic damage equal to your Proficiency Bonus and have Disadvantage on the next Dexterity saving throw it makes before the end of its next turn.