You briefly transform yourself into mist, dust, or ash, giving you the ability to pass over or through obstacles.

Encounter   ✦     Elemental, Polymorph
Standard Action      Personal

Effect: You assume mist form. While in this form, you are insubstantial, and you gain a fly speed or swim speed (choose one) equal to your speed. You cannot attack while in this form, but you can move at full speed while squeezing and do not grant combat advantage for squeezing. The form lasts until the end of your next turn or until you to end it as a minor action.

Published in Heroes of the Elemental Chaos, page(s) 51.