Tantalizing Light

A small, bright blue sphere of crackling energy  appears hovering 6 ft. above the ground. Each creature within 25 ft who sees the sphere must make a Wisdom saving throw. On a failed save, the creature becomes charmed for the duration. While charmed by this spell, the creature is incapacitated and must use its full movement to walk towards the light. When a creature moves within 5 ft of the light, a bolt of lightning shoots out dealing 1d8 lightning damage. 

The spell ends for an affected creature if it takes any damage or if someone else uses an action to shake the creature out of its stupor.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.