Lothlann the Brave, Wood Elf Battle Standard Bearer
The banner is surrounded by a magical aura of protection extending 12" in all directions outwards from the banner. Any spell directed at a target or approaching a target within this aura will fizzle out on a dice roll of a 5 or 6. Roll for each spell directed at a target within the aura and roll for each spell template entering the aura. Thus approaching spells, spell templates etc can be dispelled on meeting the aura of the banner at a distance of 12" from it.