I don't know if there is a similar instance elsewhere or if someones able to figure out from the video. Any idea what rarity the bells are? If they happen to be classed as Unique, then legit Boneshatter could be weirdly good.
Be an odd build I guess, strength stacking to get 500 strength for 100% chance to proc Molten Shower from Brutus's Lead Sprinkler and then use Molten Blast in Hollow Form, potentially with two sprinklers if it doubles up molten shower procs for meatballs fucking everywhere, specially if got the bells spawning too.
On a different note, don't know if I missed it but was there mention of how the clones will do perfect timing attacks? If they're basically guaranteed to hit perfect window timings then perfect strike could potentially be wild.
Edit: ignore the last part, forgot perfect strike was channelled so it shouldn't work.