Help on spell void weapon

Current upkeeper: Morpher
Casting time    : 5
Spell cost      : 400
Spell type      : generic
Affecting stats : Int, Wis
Affecting skills: Demonic attunement, enchantments
Affecting spells: This spell
This spell allows the warlock to enchant his weapon with
aspects of the void.

Void storm < List > Vortex of elements