Toxic Breath

You exhale a billowing cloud of magical toxins in a 30 ft. Cone. Each creature in the area must make a Constitution saving throw. On a failure, a creature takes 6d4 Poison damage and has the Poisoned condition until the end of it's next turn. On a success, a creature takes half as much damage only.

Using a Higher-Level Spell Slot. When you cast this spell using a spell slot of level 4+, the damage increases by 2d4 per level of spell slot above 3.