Otiluke's Electrical Screen

This spell creates an immobile shimmering screen of electrical energy that can be shaped into a wall, hemisphere, or sphere, with a 20-foot diameter, as the caster wishes. It is always immobile. Any creature passing through the screen suffers a strong shock. Creatures passing through the screen must make a saving throw vs. spell; those wearing metal armor have a -4 penalty. A creature failing the saving throw suffers 1d4 points of damage and both loses Dexterity bonuses and suffers a -2 attack roll penalty for 1d4+1 rounds, due to numbness. A creature making the saving throw takes no damage and suffers no Dexterity penalty, but is mildly numbed and attacks at a -1 penalty for 1d4+1 rounds.

The material components are a bit of fur, a glass rod, and a thin sheet of fine crystal, all of which vanish after the spell is cast.

Notes: Uncommon or rare spell (WoG).