You transform your body from flesh and sinew into flowing sand. In this form, you can spill through the smallest gaps.

Encounter ✦     Polymorph
Minor Action      Personal

Effect: You assume the form of living sand until the start of your next turn. While in this form, you are insubstantial, can enter enemies' squares without provoking opportunity attacks, and can squeeze through any opening large enough to permit a single grain of sand.

Published in Dragon Magazine 396.