You conjure an spiralling cylinder of wind in range, which has a 20 foot radius and 40 foot height. This cylinder becomes difficult terrain for the duration, even for flying creatures. Unattended objects in this cylinder that are Large or smaller are pulled towards the centre. A creature that starts its turn in the cylinder must succeed on a Strength save or be pulled to the centre of the cylinder, and be restrained while it remains in the centre.

All creatures inside the cylinder take damage when this spell is cast, and again at the start of each of your turns. The damage inflicted depends on how many objects and creatures are in the cylinder itself.

Cumulative Damage

A DM may determine that some creatures or objects inflict other forms of damage. A fire elemental for example may inflict fire damage instead of bludgeoning damage. Regardless of how many objects are in the cylinder, the damage a creature takes at one time from this spell cannot exceed 12d6.

While an affected target is able to take actions, it can attempt to escape the centre of the cylinder and thus remove its restrained condition. Any action that doesn't require movement but moves the creature, such as the misty step spell, automatically succeeds in removing the target. A creature can attempt a more mundane escape by succeeding on a Strength saving throw at any point during its turn.