Mordenkainen's Encompassing Vision (Alteration)

Level: 2
Range: Touch
Duration: 1 hr/level
Components: V, S, M
Casting Time: 1 round
Saving Throw: None
Area of Effect: Creature touched

This spell grants a creature a 
full 360 degrees of vision, so the creature can see sides and 
rear as well as it sees to the front.  The creature cannot be 
surprised from the rear by any attacker the creature can 
see normally.  The spell will work in combination with any 
sort of enhanced or magical vision, including infravision, 
ultravision, or x-ray vision.  A creture with both detect 
invisibility
and encompassing vision can see invisible, ethereal, 
or astral being sfrom the flank or rear as well.  The 
person affected by this spell also has a -2 penalty on all 
saves vs. gas attacks.  

MC: A crystal disc with 8 eyes inscribed upon it, spaced at 45 
degree intervals around the edge of the disc.