Shock Shield

When this spell is cast, an invisible field of magical energy surrounds the protected creature. Every other creature within the area attempting to make a melee attack against the protected creature suffers 1d6 points of damage each round an attack is made, with no saving throw against the shield allowed. The shock shield has no effect on those making missile or ranged spell attacks; only creatures closing for hand-to-hand combat suffer the effects of the shield. Creatures attempting to strike, grapple, pummel, bite, claw, overbear, punch, push, or likewise attack the caster are affected; including those delivering spell attacks by touch. Those in the area but not attacking the protected creature suffer no harm.

The material component is a small bronze disk, cupped in the caster's palm as the spell is spoken.