User blog comment:Slashingstrike/Enchantment: Kritalizer/@comment-6726953-20160820035003

How would this item interact with Rageblade? In-game, rageblade applying on-hits twice isn't listed as the phantom hit passive (it's literally just Guinsoo's Rage: every other attack applies on-hit effects twice. The phantom hit passive isn't named).

If you could build this item and rageblade (which, given unique item names, would likely be possible) getting a quad on hit effect every other attack (implying both the original and phantom on hits crit) would make the item stacking unstoppable.