Luden's Companion

Unique – Fire: Gain 6 Shot Charge stacks to fire. Dealing ability damage to an enemy consumes all Shot Charges to deal 60 (+ 4% AP) bonus magic damage to them and, for each charge consumed beyond the first, an additional enemy within 600 units of them, firing an orb at each secondary target that impacts after 0.528 seconds to deal the damage. If the number of additional targets fired at is less than the number of charges consumed, deal an additional 30 − 150 (based on remaining Shot Charges) (+ 2% − 10% AP) magic damage to the primary target, for a total of 90 − 210 (+ 6% − 14% AP).  (12 second cooldown).

Limited to 1 Luden's Companion.