Your body becomes a cloud of pure shadow that shrinks and coalesces into the form of a fluttering bat.

Encounter   ✦     Polymorph, Shadow
Standard Action      Personal

Effect: You assume the form of a Tiny bat. While you are in this form, you have a speed of 2 and a fly speed of 8, and you cannot make attacks or hold or carry any object. Your equipment becomes part of this form. You use a move action to return to your normal form.

Published in Heroes of Shadow, page(s) 55.