Black Storm of Vengeance
(Invocation)(Elemental (Air, Water), Vengeance, War, Weather)

Range:  400 yards
Components:  V, S
Duration:  1 round per level
Casting Time:  1 round per level
Area of Effect:  120 yard radius circle
Saving Throw:  Special

This powerful spell is invoked primarily against invading armies or in siege warfare. The spell's primary effect is to destroy or prevent the passage of troops who have attacked the priest or his comrades. This spell requires the priest to concentrate for the full duration of the spell. The casting time and duration are simultaneous.
In the first round of casting, the priest summons an enormous black storm cloud over the area of effect. Lightning and crashing claps of thunder rock the area, and creatures within the area of effect must save versus paralysation of be deafened for 1d4 turns.

On the second round, the priest calls six lightning bolts down from the cloud. Each is directed at a specific target, and each bolt does 8d8 points of damage (A successful saving throw indicates half damage).
On the third round, hail stones pound those in the area of effect for 3d10 points of damage (no saving throw).
On the fourth and fifth rounds, tornadoes sweep through the area of effect toppling 1 creature in 4, and doing 3d6 points of damage to 1 creature in 6.
On the sixth and seventh rounds, acid rains down on the area of effect inflicting 1d4+1 points of damage. No saving throw is allowed.
On the eighth and subsequent rounds, violent rain and wind gusts reduce visibility to five feet and movement is reduced 75%. Missile fire and spell casting from within the area of effect are impossible.
The sequence of effects ceases immediately if the priest is disrupted from spell casting at any time. The priest may opt to cancel the effects at any time.

