The lightningcloak spell surrounds the caster with a shimmering aura of lightning. Its crackling sound is audible at a distance of 5 feet, and in dark areas the caster is outlined as if by a faerie fire spell.
The cloak contains damaging electrical potential of 1d6 per level of the caster. The caster can discharge bolts of lightning at the rate of one bolt per round, up to the potential of the lightning-cloak. For example, a 12th-level wizard can cast two 6-dice bolts, four 3-dice bolts, a 9-dice bolt and three 1 -die bolts, or any combination that adds to 12 dice. The bolts crackle outward to a distance of 40 feet, and each will strike one creature. A saving throw vs. spell is allowed against each bolt for half damage. Bolts of 3d6 or more require saving throws for exposed items if the target creature fails its saving throw. The maximum potential for the cloak is 18d6.
Anyone who touches a lightningcloaked wizard is shocked for 1d6 points of damage; if a metal object (such as a metal weapon) is the touching agent, a full 6 points of damage is sustained. No saving throws are allowed against these shocks, but each discharges 1d6 of the cloak's potential.
The lightningcloak protects the wizard from the effects of electrical attacks. These attacks, after any magic resistance and saving throws have been resolved, are absorbed without harm to the wizard, up to a maximum of 2 points per level (for example, 24 points for a 12th level mage). If the lightningcloak absorbs more than its capacity of electrical damage, it discharges all of its remaining bolt capacity directly into the caster (no saving throw). The caster must make a successful system shock check or lose consciousness for 1d4 rounds.
The spell ends when all its bolts have been used or if it absorbs more than its maximum capacity of electrical damage. Otherwise, cloak lasts one turn plus one round for each level of the wizard.
The material components for this spell include powdered amber and rose quartz (100 gp total value), and a bit of phosphorous. Also, a finely woven cloak of no less than 500 gp value must be worn; this can be re-used for subsequent castings of the spell.
Notes: Very rare spell. Known to be in The Book of Naz. (Updated from Dragon Magazine.)