Ah, so we're doing the 'developing minor characters right before they die' cliché. I really should have seen this coming a mile away as soon as I thought Moontari was going to get a real fight sequence... unfortunately I didn't. Bero Bero's fate seems pretty bleak too, but we still haven't seen all of her sugar rush powers so maybe that will be her saving grace. Maybe she'll end up fighting Buelsar in Moontari's place, although right now Baam seems to be going up against him. So much for conserving energy... Moontari probably would have been better off if he just let Baam duo that fight with him.
Angel too seems to be getting beaten, but since she's been one of the most prominent characters on the villain's team I still kind of feel like she has a decent chance of surviving this somehow - of course the flashbacks she just got don't really help her case. It helps that Ehwa doesn't seem like the type to outright kill people, but that is also dependent on how much control she has of her new powers and how pissed off she is at her teammates' deaths.
Ehwa's new flame powers certainly look flashy, probably some of the series' best art, but I don't see how its really different from her earlier powers besides being more powerful. I guess it completely engulfs her in a flaming aura (is that the first time she's done that?) and allows her to fly. Her completely calm appearance is a pretty stark contrast to the raging flames which I liked.
So I guess there was another way to release the chains than killing Buelsar after all, if he's asking Baam to hurry this fight so he can get past. He's such a liar.