Battle Standard of the Tides
This blue flag ripples in a wind of its own, as ghostly water fountains whirl protectively around you and your allies.
Wondrous Item 45,000 gp
Power (Zone) Encounter (Standard Action)
Effect: When you plant the battle standard in your space or in a square adjacent to you, it creates a zone of wind and tides in a close burst 3. Enemies treat the zone as difficult terrain, and when a nonaquatic enemy ends its turn in the zone, it is pushed 3 squares from the standard's square. The zone lasts until the end of the encounter or until the battle standard is removed from the ground. Any character in or adjacent to the battle standard's square can remove it from the ground of as a standard action.
Published in Dragon Magazine 381, page(s) 90.