With a puff of stardust, you create an astral pathway that provides expeditious movement atop its surface of light. You manifest a 120 feet long, 10 foot wide path that you and your allies can use. This path's surface negates difficult terrain, and grants 2 feet of movement for each foot of movement speed you spend while inside of the area. It cannot bridge chasms or air. The spell emits bright light atop its surface, and dim light 10 feet out from its edges.   Hostile targets that enter the space for the first time or start their turn there must make a Constitution saving throw against your Spellcasting DC or take 1d4 Radiant damage and have the surface of the path treated as difficult terrain. Successful saves only take half damage.   If you dismiss the spell early, or fail a concentration saving throw while it is active, the path will fade away.