Mempter's barrier

Mempter's barrier was a defensive evocation spell from the 6 circle of magic that was somewhat similar to the wall of force arcane magic spell, developed by the powerful elementalist Mempter.
==Effects==
Mempter's barrier conjured forth a magical force field, similar to the one created via wall of force, but, unlike it, Mempter's barrier allowed one-pay passage through. It allowed creature from the inside of the barrier to attack through with weapons, spells, or ranged arms, pass though, but not back, also blocking anything that was trying to penetrate it from the outside, including projectile spells, missiles, and creatures. The magical barrier was immovable and invisible, and could be erected at the distance of from the caster, and its dimensions were a cube or a sphere of up to squared, increasing with the caster's powers. The duration, like the size, increased with the caster's magical prowess growing. The caster could end the spell at will.
Mempter's barrier was unaffected by dispel magic and most other spells. It was immune to any physical, cold, heat, lightning, dragon's breath, and other types of damage. The barrier immediately disappeared is hit with the disintegrate, spell or via the use of a sphere of annihilation or a rod of cancellation.
==Components==
The spell required verbal, somatic, and material components to be cast. Its material component was powdered diamond worth of 5,000 gp, and a mirrored lens.
==History==
Mempter's barrier was the creation of the mysterious human, by some accords, or a Djen of Calimshan, by others. The wizard settled in the city of Ravens Bluff in the mid-to-late 14 century DR, already possessing the knowledge of the Mempter's barrier spell.
==Appendix==
===References===
Category:Wizard spells
Category:Arcane spells
Category:Force spells