First  off,  you  have  far  too  many  50s  and  40s.  You  should  focus  on  getting  more  60s.

And  what  is  in  your  vault?  There  should  be  much  more  rares  on  your  account  by  now.  Unless  you  fooded  all  of  them. 

As  it  looks  to  me-  your  best  Clan  Boss  team  would  be:

Frozen  Banshee-  Lead  (Poison,  Poison  Sensitivity,  and  until  your  team  is  speed  tuned  if  debuff  bar  is  full,  Turn  Meter)

Apothecary  (Healing,  Turn  Meter,  Increase  Speed)

Ninja  (Decrease  Defense,  HP  Burn)

Coffin  Smasher  (Decrease  Attack,  Backup  HP  Burn)

Fayne  (Backup  Decrease  Defense,  Weaken,  Poison,  Backup  Decrease  Attack)

I don't recognize many of your champs. But in descending order of priority, a good CB team will have:

1) AOE DEF up

2) ATK down

3) Poison

4) Counter-Attack or Ally-Attack if CA isn't available

5) Block Debuffs or Cleanse Debuffs

6) DEF down / Weaken

The only champ I see in your list that meets any of those requirements is FB. But again, I don't recognize many of the icons.

I would say apo, fb, spider, ninja, gerhard(stun target). Also rip all the potions wasted on gravedigger, use them on ninja

First  off,  there  is  no  point  with  Gerhard  being  Stun  target  besides  his  Passive,  and  he  is  really  squishy  and  doesn't  bring  that  much  more  utility.

Also,  Spider  requires  a  ton  of  books,  and  yes,  he  is  a  good  champion,  but  no,  not  for  Clan  Boss.  His  cooldowns  are  too  high,  the  debuffs  won't  last  long  enough.

yes, was talking about passive