Yen Sid's Radiant Butterfly

A cantrip created by the mysterious Archmage Yen Sid, this spell allows you to summon a shimmering, ethereal butterfly to your hands. The butterfly sheds bright light in a 15-foot radius and dim light for an additional 15 feet and can fly up to 40 feet per turn.The butterfly vanishes when it detonates or when the spell ends.

As a bonus action, you can cause the butterfly to explode in a burst of radiant energy. Each creature within 10 feet of it must make a Dexterity saving throw, taking 1d6 radiant damage on a failed save, or half as much damage on a successful one.

At Higher Levels. This spell’s damage increases when you reach higher levels: 2d6 at 5th level, 3d6 at 11th level, and 4d6 at 17th level.