You open a breach into the elemental plane of Air, creating a vortext of swirling air currents at a point you designate within range. This vortex is 10 feet tall and 5 feet wide, and it remains in place until the start of your next turn. When you cast the spell, any unsecured objects (weighing under 10lbs) within 10 feet of the vortext are sucked into it, swirling with it at intense speeds. 

A creature that moves into the vortex's space for the first time on a turn, or starts its turn there, must succeed on a Dexterity saving throw or take 1d8 bludgeoning damage, plus an additional d8 for each item the vortext has sucked in. 

At the start of your turn, the vortext dissipates, and launches all its held items into the air at high speed. The GM randomly chooses a number of creatures within 30 feet of the vortext, up to the number of items held within; make a ranged spell attack against each creature, dealing bludgeoning damage equal to 1d8 + your spellcasting ability modifier on a hit.