Balefire Spark

A flash of Balefire erupts from your hand. Make a ranged spell attack against the target. On a hit, the target takes 1d4 fire damage and 1 d4 necrotic damage. On a critical hit this spell inflicts fire vulnerability and necrotic vulnerability on the struck target. On a critical failure this spell inflicts fire vulnerability and necrotic vulnerability on the caster.

This spell's damage increases by 2d4, One for each damage type when you reach 5th level (4d4), 11th level (6d4), and 17th level (8d4).