I saw a guys reddit post on Belias, so I figured what the hell, let me give it a whirl. Two attempts later.... I sub-30'ed Belias without actually using any water mages. Go figure. Exact team was:
Onion Knight -- Voltech, Entrust -- mUSB -- MakoMight
Tidus -- Sapphire Bullet, Powerchain -- CSB -- DrMogTeach
Alphinaud -- LunarLeviathan, Opogopo -- SSB -- Dualcast Summon
Palom -- Chain Waterja, Chain Waterga -- USB -- +30% Weakness Damage
Lenna -- Curada, Protectga -- USB2 -- TGM
Magicite: (main) Geosgaeno, (subs) Famfrit, Octomammoth, Quetzcotl, Evrae
RW: Wall
Video:
Belias sub-30 clear
I had to tweak it some because I don't have Aeris, but Lenna's USB2 worked decently enough. I also don't have Kraken anymore since I fused it into a 5* magicite... so I put Geos in the primary slot instead, which lets me keep Belias in savage mode for most of the encounter.
Gotta be honest, I'm surprised this worked as well as it did. Doesn't feel like doing three more kills to finish maxing a Belias will be too painful. Glad I managed to beat this, because I was planning to pull on Strago's chain when it comes back in a few weeks, but now I can safely skip that banner.
I gave one try to Phoenix too and got demolished. I'll have to browse around to see what kind of teams people are using.
I also realize the irony of me working on magicite fights a day after bitching at how bad they are, but after seeing that reddit post it inspired me.