Wall of Force

Required	Prime Sphere 4
Range	Rank x 10 yards
Area	Rank x 10 square yards
Duration	Rank x 2 rounds
Casting	Verbal, Somatic
Cast Action	Standard
Cost	3 Mana
Effect	Creates a wall of force that is invisible to the naked eye but may be viewed with the assistance of effects such as Mage Sight. The wall cannot move, it is immune to physical damage of all kinds and remains unaffected by most spells, however it is still vulnerable to Dispel Magic. Physical attacks and spells affecting magical defense cannot pass through the wall in either direction. However, such spells may reduce the duration of the wall by 1 round for each rank over the wall's rank. Resisted spells, teleportation spells, and similar effects can bypass the barrier with no penalty.