Bioja (Bio IV)

A blast of virulent air erupts from your hands. Each creature in a 60-foot cone must make a Constitution saving throw. A creature takes 4d8 poison damage and 4d8 necrotic damage and become poisoned for 1 minute on a failed save, or half as much damage on a successful one. At the end of a poisoned creature's turn they reattempt the saving throw, ending the poison on a successful saving throw.

At higher levels. When you cast this spell using a spell slot of 6th level or higher, the initial necrotic damage increases by 2d8 for each slot level above 5th.