| Casting Time | Cost | Duration | | ------------ | ------------------------- | --------------------------------- | | 1 [[Action]] | 4 [[Spelldriving Points]] | [[Concentration]], up to 1 minute | A strong wind builds up around the airship, encasing it in a fast moving torrent shaped like a bubble. The bubble is 1 foot thick and lasts for the duration of the mode. When the torrent of wind surrounds the ship, each creature that attempts to pass through it must make a [[Strength Saving Throw]] versus your spell save DC. A creature takes 3d8 [[Bludgeoning]] damage on a failed save and is pushed out, or half as much damage on a successful one and is able to pass through the torrent. The strong wind keeps fog, smoke, and other gases at bay. Small or smaller flying creatures or objects can’t pass through the bubble. Loose, lightweight materials that come into contact with the bubble fly upward. Arrows, bolts, and bullets from handheld weapons and ballistae fired at targets behind the wall are deflected upward and automatically miss. [[Light Cannon|Light Cannon's]] have [[Disadvantage]] on all targets within the bubble, [[Heavy Cannon|Heavy Cannon's]] suffer no penalty. Creatures in gaseous form can’t pass through the bubble.