B+ ---> A-/A
On the surface it might seem kinda odd but imo this mon is unequivocally the most powerful breaker in the tier. Flame orb can destroy every single archetype and build since no mon cleanly switches into the combo of burned cc/facade/knock. I honestly think it's as threatening to full stall as xurk was since stall has little, if any, counterplay outside of scarfers. Quag, sylv, mantine, tent, and klefki are all 2hkoed and mola/gliscor are used as setup fodder. It has respectable defenses too (80,75,95), meaning that it can freely switch into scalds, eqs, and knocks (if already burned), and that it can't be trapped by pursuits. Obviously it's not infallible, as it can be revenged relatively easily, but the offensive pressure it creates upon switch-in and how much it can hurt stall 100% merits a rise imo.