Hmm, it's a interesting mix of champions. I will say for Hydra you're off to a really good start. You have Wallmaster, Nia and Ukko. Adding in Crohnam and Djamarsa you should be able to get the Hard Chest without much issue.

Anyways for NM Clanboss: Adelyn might be worth bringing. She has a really good heal on the A2 plus 5 star brimstone would get a lot of extra damage. Skullcrusher is definitely worth brinigng. I get the Frozen Banshee, pairing with Kael AND/OR Toragi might be a good idea. Pair that with Elder Skarg and Skarg should be doing all 4 hits on his A2 AND placing a HP Burn. 

If you're playing on PC, if the game "Crashes" for some reason during CB fight you keep your key and can try again to test out teams

never really gave hydra much thought i just remember getting really frustrated with it when i unlocked it and just been ignoring it since. i was running adelyn in my cb team for the longest time i think i will get her to 60 and put her back in to see how that works before i try building up toragi

I guess the question is, where is the CB run having issues? Is it ending too soon or is it going a lot of turns but the damage is low?

side note for op. Stop levling everything. Pick a champion you will be using and take it all the way to 60 fully ascended, full masteries, and books. 

most of the leveling is from throwing champions in the sparring pit

i

thats my most recent key. the damage range is anywhere between 10.5-15 million and this particular run lasted 21 turns

How many poisons are on the boss each turn? Is it like 7+ or 4-6? Also is Ukko or Djamarsa booked? With RNG Djamarsa could really boost everything and since you don't have a reviver, a Team Revive wouldn't be bad. 

Ukko same thing BUT also he can remove CB's Increase Atk and does Decrease Atk himself. Not to mention Increase Speed early and then saving the revive, because he does Block Damage on the Revive which can buy your whole team another turn.

The biggest question I forgot to ask is, do the champs on your team all have their Masteries to at least Warmaster? 

id say 4-6 poisons sounds right. djamarsa is booked ukko is not in fact none of my legendaries are booked ive just been hoarding them becuase i dont know who i should use them on. everyone on my cb has warmaster except ruella which has giant slayer. 

im sort of invested in ukko being an arena champion i would have to redo his masteries and gear

Of your legendaries, I'd say Wallmaster probably deserves books immediately. He's got solid use in the majority of content and fits into lots of teams.

What gear sets are you using btw?

for wallmaster i currently have him in an instinct set and 2 random pieces of gear. for my clan boss team ruella and ghrush are in relentless/perception, frozen banshee in 4 pieces of speed 2 pieces of perception, skullcrusher has 4 pieces of immortal and 2 other random pieces, and kael is in lifesteal/perception.

Sorry I've tried thinking of other options. Adelyn could replace Ghrush IF she was booked, but that is the last champion you should be booking. How many more days till you get Scyl? She doesn't need any books for CB (some say to never book her) and would easily add several more turns to your survival, especially in Relentless.

Only other team setup I was thinking was Crohnam, Djamarsa, Skullcrusher, Banshee and Toragi. The concept would be Crohnam extending his HP Burn over and over with counterattacks and constantly activating it with his A2 and Passive A2. Also He'd self-rez and wouldn't need any books. Banshee synergizing with Toragi's poisons, plus RNG on Djamarsa's passive could get a lot of extra abilities in there. Also two Ally Protects alternating would spread the damage PLUS Djamarsa can use her revive on the team to keep the fight going

im 106 days away from scyl unfortunately. i actually like the idea of that crohnam djamarsa skullcrusher banshee toragi team you suggested i might try that out once i get djamarsa and toragi leveled 

A few thoughts:

1) I'm going to assume you aren't speed-tuning your team. Make sure you learn how that works. Given you've no stun target, you should consider looking into a 4:3 team where Skullcrusher is the target, though that'll only really work if you're either against green affinity or void.

2) Toragi should really be on your team. He does a much better job poisoning than either Kael or FB. Likely he can just be on the team as your sole poisoner.

3) Without tuning, the team that Oni suggested is probably your best bet, though I'd probably use Nia instead of FB, since Toragi probably can fill up the debuff bar on his own.

this is all great info thank you. i didnt think toragi could put out so much poisons i really gotta get him leveled so i can try him out because it would be nice if i could replace both kael and fb