An item that allows the user to attack while invulnerable.
This item may be used as an action. Until the end of the creature's current turn, and the end of the turn after that, or until 12 seconds have elapsed, the creature steps into the ethereal plane, and cannot be affected by attacks, spells or effects. They appear transparent to those outside of the ethereal plane.
The creature can still affect those outside the ethereal plane as normal.
This item has one use. It recharges at midnight.