Amathos' Storm of Spores

You launch a tiny spore from your finger tip to a point you can see within range, where it expands in a 60-foot-radius sphere of pestilent spores. The area is lightly obscured and each creature within the area must make a Constitution saving throw. On a failed save, a creature takes 8d6 poison damage and becomes poisoned for the duration. On a successful save, it takes half as much damage instead.

When a creature starts its turn in the sphere of spores, it must succeed another Constitution saving throw or take 6d6 acid damage on a failed save. On a successful save, it takes half as much damage instead.

If a creature is poisoned by this spell, it can make another saving throw at the end of its turn.

If a creature drops to 0 hit points by this spell, its body decomposes rapidly, leaving no trace after 1d4 rounds.