Sword of Valor
A banner (with a sword on it) that inspires armies against demons. It currently resides in Drezen, and must be reactivated.
The Inheritor herself carried it. Inspires army against undead and outsiders. Mounted in a public, visible place, bars demon teleports and summoning within 10 miles. Imparts a -4 to AC and saves to affected. 1/month a worshipper of Iomedae can summon a planatar to defend the banner. Any non-evil who sleeps within 1 mile of the banner becomes immune to fear from demons and their worshippers.
The Sword can only be destroyed by Iomedae herself.
Activating requires mounting on the wall of a castle held by good guys.