You channel the divinity of radiant starlight into your astrally attuned weapon (melee or ranged) and make an attack with it against one creature. On a hit, the target suffers the weapon attack’s normal effects, and then becomes engulfed in shimmering starlight until the start of your next turn. If the target willingly moves 5 feet or more before then, the target flares with astral fire, takes 1d8 radiant damage, and the spell ends.   When used with a ranged weapon, the spell is only effective within the weapons "normal" range.

This spell’s damage increases when you reach certain levels. At 5th level, the attack deals an extra 1d8 radiant damage to the target on a hit, and the damage the target takes for moving increases to 2d8. Both damage rolls increase by 1d8 at 11th level (2d8 and 3d8) and again at 17th level (3d8 and 4d8)

* Pre-requisite:  Astral Elf
* Pre-requisite:  Feat: Astral Elf Radiant Master