Of course. Spellweaving procs on-hit, so it's logical to conclude that if you're hitting 5 things at once, that's 5 times as many procs than if you were DPSing single-target.
Yes of course i know that hitting 5 targets instead of 1 will make it proc more. And of course you should be Mind Searing when the adds are up, and if he isn't doing that hes doing something wrong. But i dont think the question was if he should mind sear or not.
Im more wondering if you are multidotting the blistering tenticles or keeping dots running on claws while dpsing the big tenticle just thinking of how to get the most out of spellweave not just a hit this it works answer the more uptime on spellweave the more dps
You definitely want to keep DoTs on both the claw and the mutated corruption giant tentacle thing. There's no reason not to, and more tics=more hits=more spellweave. Make a macro to mind sear off your tank for bloods. Our tentacles die so fast, it's not worth it for me to multi DoT them, so I just MS x 3 and MB, SWD as needed. Multi target fights are where we can really shine, so make sure to keep those DoTs rolling.