Blackfire Torch adds sustained damage to repeated Radiant Volley and Solar Snare poke, while Infinity Orb helps reach the finishing threshold created by Overwhelm stacks. Rabadon's Deathcap and Void Staff provide AP and penetration, and Zhonya's Hourglass is the sole active item for another safety window after Rebuttal. In the combo simulation, Arcane Comet triggers from the first ability hit and gives repeated poke the most reliable expected damage.