Djinn and Tonic

For 1 hour after you drink it, a magical wind
appears to tussle your hair, cloak, or other
clothing dramatically.
You also gain the effect of the gaseous form
spell for 10 minutes (no concentration required)
or until you end it early using an action. When
the effect ends, your form rematerializes in a
rush of air, forcing all Large and smaller
creatures within 30 feet of you to make a
DC 15 Strength saving throw. On a failed save,
creatures are pushed 10 feet and knocked prone.