Crystal Dust Cloud

You take a deep breath of air and expel a cloud of fine crystal dust centered on a point you choose within range. The cloud spreads around corners. It lasts for the duration of the spell and Its area is not obscured. The space in the cloud is filled with sparkles in dim, normal, and bright light.

A creature takes 3d6 slashing damage when it enters the spell’s area for the first time on a turn or starts its turn there. A creature who spends more then 1 turn in the cloud has to make a constitution saving throw vs a spell DC of 14, a failed roll applies an additional 1d4 piercing damage per round as the crystal dust has entered their lungs and causes them to begin to cough up blood.  If a creature spends 3 or more rounds in the cloud another saving throw vs the spell DC is required to prevent blindness as the fine crystal dust begins to enter the eyes.

The spell caster is immune to the inital slashing damage if they enter the cloud but prolonged exposure will require the same saving throw to avoid the bleed effects.