Asphyxiate

**adapted from Asphyxiate by D3stroy3r108

The caster chooses a point within 60 ft.  At that point, in a 20 ft radius sphere, the atmosphere is rapidly replaced by carbon dioxide and other toxic gases. All fires are extinguished. Creatures that end their turn in the spell's area of effect must make a CON save.  On a failed save the effected creature takes 5d8 poison damage.  On a successful save, the effected creature takes half as much damage.

Creatures that don't breathe or are immune to poison are immune to this spell.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage of this spell increases by 1d8 per spell level above 5th.