Dust Cloud

You take a deep breath of air and Dust and expel a cloud of fine 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 flying debrie and is visible to all creatures

A creature takes 3d6 bludgeoning 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 the casters spell DC, a successful roll only takes half damage.

The spell caster is immune to the initial bludgeoning damage if they enter the cloud but starting there turn in the cloud will results in damage.