None of those champs have leech, which is absolutely critical for your team.

I mean besides the obvious non-unkillable clanboss world record with 200M (Turvold, 2x Krisk, Iron Brago, Valk) , my best team and the one I'm working on build right now is :

BEK (lead), Vizier, Valk, Rhazin and Iron Brago. 

I  give  my  right  arm  and  leg  for  a  vizir  :)

Seeing  as  this  is  all  pretend...  ok  they  are  all  wearing  lifesteal.  

I got Vizier, BEK, Trunda, Big Un and Royal Guard, how does that sound for ukillable clan boss. would love to know what others are using in clan boss

My team is Sepulcher Sentinel lead, Skullcrusher, Vizier, Corpse Collector, and Rhazin. Speed tuned for NM so that SS acts last, but before CB. She eats the stun once every three cycles, and blocks the stun the other two. SK has CA up for both of CBs turns, and acts second to last.

Trunda,  Big-Un,  and  Royal  Guard  are  bot  suitable  for  clab  boss,  other  than  pure  damage.  Id  say  that  Belanor  of  yours  would  do  better,  maybe  toss  in  FB  and add  a  Doompriest.

I'm running Sepulcher, Sandlashed, Valkyrie, Frozen Banshee, Geomancer. Not sure what it would do on a unm speed tune. It's fair consistent 43mil a key in NM without a def down source.

I would love to try a shield based build so

krisk, brogni, 2 x lanakis and maybe geo would be my dream build

I have been playing with a semi shield build on nightmare (brogni, sandlashed, jareg, draco, fatman) and even with the shields dropping off regularly so they cant grow i get ok numbers (47 million last time)

When its force, taking out jareg and using vizier- is a bit unreliable getting the initial drop attack, but it does about 46 million.

So the potential for shield builds looks huge, just need a krisk :)

T-800, Iron Giant, Alita, Megazord, Chuck Norris