Projectile modifier spells that add an arc of material between multiple projectiles. Arc spells require a minimum of two projectiles in order to function
Electric Arc is a modifier that causes projectiles to arc lightning between them, dealing both explosive and electrical damage. Unless the spell naturally produces more than one projectile per cast, like Triplicate Bolt, it must be used with a mutlicast modifer to work.
This is an extremely dangerous modifier that can wreak absolute havoc. Perks for immunity to both explosion and electrical damage is heavily recommended if there's even a chance you think you'll be hit by this.
Synergizes well with a multicast array of Bubble Spark spells, as they're somewhat slow & very cheap.