Helm of Ghostly DefenseLevel 22 Uncommon

This misty helmet allows you to resist some necrotic damage and can be activated to turn you insubstantial for a short time.

Head Slot        325,000 gp

Property

Gain resist 10 necrotic.

Power ✦ Encounter (Immediate Interrupt)

You can use this power when you are hit by an attack. You become insubstantial until the start of your next turn.

Published in Player's Handbook, page(s) 248.