Ring of free action

A ring of free action, cost 200, makes you immune to paralysis when put on.

This immunity includes:
 * Chest traps
 * Potion of paralysis or potion of sleeping
 * Paralysis or stunning spells (reduced to one turn)

In addition, protection from the paralyzing attacks of the following monsters:
 * Floating eyes
 * Gelatinous cubes
 * Ghouls
 * Guardian Nagas
 * Shades
 * Yeenoghu

Eating the ring (while polymorphed into a metallivore) will give you intrinsic sleep resistance instead.