Battle Standard of Tactics
This long pennant swirls even in still air as it carries your thoughts to your allies.
Wondrous Item 85,000 gp
Power (Zone) Encounter (Standard Action)
When you plant the battle standard in your space or an adjacent square, it creates a zone in a close burst 10. You and each ally in the zone gain the ability to communicate telepathically, with no chance of foes hearing your thoughts. You and your allies automatically know each other's positions even if you cannot see one another, and can target one another with powers even without line of sight.
This effect lasts until the end of the encounter or until the battle standard is removed from the ground. Any character in or adjacent to a battle standard's square can remove it from the ground as a standard action.
Published in Adventurer's Vault, page(s) 179.