UDK (provoke, heals)

Scyl

Husk (provoker and DPS on Magma, would be helpful if some self healing but if not, is ok)

Then I think we can start to think about DPS here, and if you can protect them well enough I'd be looking at Fahrakin and probably Kael or Ronda (even with affinity issues, since those are your two best other DPS options at 6. With Fahrakin you will want to avoid placing HP burn of course. One other option would be to bring in Deliana to put block buffs up to prevent the continuous heals when Fahrakin places HP burn.