The Wizard's signature spell Electrocute reads
Lightning arcs from your fingertips, dealing 80% weapon damage as Lightning. The lightning can jump, hitting up to 2 additional enemies.
I use it with the Chain Lightening rune which increases the number of enemies I can hit to 6.
Does each enemy I hit in the chain give me 4 Arcane Power with Prodigy? Meaning I can get at maximum 24 arcane power with one cast of Electrocute? Or does Prodigy only proc once per Electrocute cast?
When you deal damage with a Signature spell, you gain 4 Arcane Power.