If dex is off, his SP1 will hit you once he's unblockable.
Perhaps abs man in magma mode. He would make the unstoppable last for a much shorter time and he'd get through the incinerate. You'd just have to turn back on dexterity and out damage the buffet I supposedo you can dexterity those sp1s.
I think the unstoppable is passive so abs wouldn't do anything about it.Just use any heal block or mag or reverse healing like Torch.Posting your roster would also be a faster way to get help
Your post asked why he became unblockable. The node explains why.In terms of a counter, I’d leave dexterity on and dex the special 1. I generally ignore the regen from buffet nodes and just outdamage it somehow. With void you might even end up reversing it and taking some extra health off.You need someone incinerate immune but beyond that anyone should work if you can intercept well so I’d pick your highest damage dealing incinerate immune champ and go for it. Absorbing Man in magma form is the only one I can think of that would deal with the incinerate and also mitigate the unstoppable. I don’t know if Shang Chi can cleanse the incinerate from the node but I’m guessing he can’t. He can place a slow to deal with the unstoppable though if he can cleanse the incinerate.
I don’t think Mags would because of the added ability accuracy for the node.Awakened Peni would heal block and is incinerate immune.