Help on spell thunderstorm

Current upkeeper: Oya
Casting time    : 10
Spell cost      : 1
Spell type      : offensive (area)
Spell words     : voltax natura
Affecting stats : Int, Wis, Lvl
Affecting skills: Arcane power, Energy focus
Affecting spells: Thunderstorm
With this spell a powerful wizard can summon the forces of thunderstorms to
strike at his enemies.

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