Dhukk is definitely an upgrade if you can build him with 100% crit. Shouldn't be too hard.

I'd personally go for Khatun next, but it's not that huge deal.

The team is not bad for lower levels. Tho for higher levels it lacks healing.

In Doom Tower it will easily beat the first boss, but not the second one, for that you need a lot more cleans.

thanks 

follow  up  question.    Given  the  scarcity  of  legendary  books  and  that  i  am  far  from  a  whale  are  fu  shan  or  flametongue  worth  booking?

Fushan is more worth I think, hits harder, places stun and decrease DEF which are very useful debuffs. Regarding the topic of the post, dhukk also places decrease atk, which is more already than warmaiden

Fu-shan should be your next 60 and is absolutely worth booking. He offers AoE cc, a massive damage output, and one of the best speed auras in the game.

Dhukk is definitely better than warmaiden and getting him to 100% crit rate isn't too difficult.

Your dragon team should run fu-shan (better damage and a better aura than anyone you listed) and lacks healing in any form, so it won't get you anywhere close to 20. 

Thanks  all.    Will  look  at  fu  shan  next.

my  healer  situation  isnt  great..

Hexweaver,  warpriest,  thenasil,  abyssal,  quargan  the  crowned.

so  that  said  what  is  the  best  dragon  team  i  can  put  together  with  the  champions  i  have.    

Fushan, Dhukk, Sicia, Thenasil and not sure on the fifth - HK, Marked or Kael could all be options, you'd have to test a bit which works best. For Dragon, Coldheart should only be considered for the highest levels, like 18-20 or so, because until then her Heartseeker won't do that much (for Fire Knight and Spider, she's great at any stage though, because there her turn meter depletion is key, as well as her 4-hit attack with heal reduction for FK). Thenasil is a pretty solid healer if you build his HP high and will put increase defense as well. 

thank  you.    Just  out  of  curiosity,  does  the  comp  you  propose  assume  all  champions  are  fully  booked.    

right  Now  kael  has  far  and  away  been  my  best  damage  dealer  on  CB,  even  when  running  with  sicia.    both  have  full  masteries  but  sicia  has  no  books.    

No, not at all. HK I wouldn't book at all, Fushan and Sicia don't need books that urgently either. Kael yes, but I assume he should be booked already by now. Dhukk's A2 is your priority for epic books, but already good without them too. Coldheart should also be booked to max her A3 - but as I mentioned, for dragon she isn't a priority yet, only for FK/spider. 

thanks,  what  about  booking  healers?  My  understandings  is  the  %  inrease  healing  is  multiplicative  not  additive  so  a  5%  increase  is  25%x(1.05)  not  25+5.   So  not  a  huge  gain. But  the  1  turn  cd  reduction  seems  significant.    on  Healers  is  the  cd  reduction  more  of  a  nice  to  have  or  must  have?

1. Yes, the %-increase mulitplicative und therefore not really great.

2. If the healing skill has a cooldown reduction, go for it. A healer won't help if he can't heal at the right moment. If your teammember allready died before the cooldown is over, you would need a reviver instead.