Thousand Thunderbolts

Reaching out to the sky, the caster charges vast amounts of magic, focussing them into a 100 ft diameter circle up to 300 ft above a point of your choosing within range. Upon completing the incantation, it discharges in a terrifying display of 1000 strikes of lightning. The lightning will strike through any cover, including total cover, if thickness does not exceed 4 ft. Lightning resistance is ignored.

Anything within the area of effect must make two constitution saving throws. On the first failed save, 10d10 Lightning damage is dealt, and 5d12 Thunder damage for the second. If the saving throw is successful, the damage is halved.
If failing the saving throw against Thunder damage, perform another constitution and an additional dexterity saving throw. Failing the second constitution throw will cause 6 rounds of Deafened, and failing the dexterity throw will cause targets within the area of effect to be knocked prone, and inflicted with 1 day of Paralysis.

Targets wearing metal armour, shields or weapons have a +5 DC on saving throws against lightning damage.

If a cleric or a druid casts this spell, it automatically deals additional 10d4 Radiant Damage. A wizard gains this effect only if rolling 3d6 to a 3, 4, 7, 12 or 18. Creatures made of lightning only receive Thunder (and Radiant) damage, which is halved, and cannot receive Condition Paralysed.