This is my first time posting, I hope I am in the right place!
I have a few decent champs and I am looking for some advice on who would be most useful to 6 star next.
The time it takes to farm the food makes this a big investment for me and I don't want to make a mistake again, as I feel I may have done with my Fellhound.
My current goals are to progress with clanboss, reach stage 13 of dragon and hit Silver 1 in arena. My damage is just not enough for dragon (I get it to about 25% HP then my champs die) but I hope my next 6 star will push me over the line.
For arena I run warmaiden, apothecary, sepulcher, dhukk. Speed -> Dec Defence -> Buff defence -> Dhukk smash. It works some times, but is not consistent. Who would be my best champ to invest in for arena nuking?
So it very much depends on what is your top priority.
Given your arena team I would go with sepulcher sentinel, since he is in your arena team and he is one of the best CB champs in terms of dec atk and block debuffs.
But you also struggle with dungeons (especially spider or fire knight, but dragon and ice golem also), so coldheart would be your boy.
Sandlashed survivor is also great for arena and cb and dungeons, since he can inc duration of your buffs while decreasing duration of enemy buffs + he increases your survivability with passive.
So these 3 would go first if you ask me. Dependent on the top priority of your acc. I dont think you can get all at once.
Later - ursala, apothecary and reliquery tender, as they also bring tons of utility.
Since you got dhruuk on lvl 60, i would pass on tayrel - they basically do the same stuff.
I would also say that lvling felhound was not that bad, since he is great farmer for campaign - if you have proper gear he will let you farm brutal camp in 6-7 sec.
You have a ton of excellent epics - excellent debuffers, mostly, so a lot of potentially viable paths.
Your arena approach sounds good, but indeed Dhukk is more a debuffer than a real nuker - even though perhaps you could build him damage-focused with crit rate prioritized over accuracy, you probably don't want to since you need his debuffs in dungeons... same for Tayrel, you could build him as a def-based nuker, but even if you don't need him to land his decrease defense A2 since you have enough others who can do that, you'd still want him to land his turn meter depletion A3 on the Spider or Fire Knight. Maybe Athel as a more straightforward nuker, but you do have better options for next 60.
An alternative is to drop Sepulcher and lose her increase defense, but instead add a second nuker after Dhukk's AOE hit. That could be Tayrel, either his A2 or A3 depending on the situation, or Shamael's A2, which if it kills someone, as it really should, will then put a true fear debuff on the opposing team.
As for next 6*, Sepulcher is surely a good pick, though more defensive. Ursala also looks very, very strong - wish I had one. Tayrel or Shamael would be good picks as well, while Coldheart and Frozen Banshee are future 6*s but maybe not just yet, CH because she's more endgame and FB because she's more specialized and you'd prefer somebody more widely usable now.
That being said, you'll want to use FB on dragon, something like Sepulcher, Dhukk, Athel, Ursala (or Apo, or Reliquary Tender), FB should work for 13. FB is useless on the waves but if she's booked and you can get her to the dragon alive, she'll take care of him. She'll also be great on the CB.
I like the idea of Sepulcher, which is a great defensive pick. However, she generally lasts as long as my team at the moment and is keeping up dec attack and the defensive buffs.
I really like Ursala's abilities as well. I wonder though, if she needs booking to be a better pick than fully booked Apothecary / Reliquary? What do you think?
I know originally I stated a few goals, but really a main goal at the moment is to improve my arena team, so that I can improve my great hall at a greater rate. However, I do seem to lack some AOE damage in there for the strategy I am using at the moment. My Dhuuk is built with crit and hitting 25k+ with sepulcher defence buff but I am finding when reaching 1200 rating or so, this is not enough to 1 shot on its own. So who would I switch sepulcher out of my arena team for? Is it worth investing the 6 star in an Elhain or Ethel, or will they fall off later down the line? and if so, would I be better to go for the Tayrel or Ishmael?
Also, I get Khatun tomorrow, so that may be my arena speedy lad instead of Apoth.
I'd LOVE to get my Fellhound to be a 5 second farmer. He's already 6 star level 60, but I can't get his stats high enough so that he can one shot the waves.
As for who to 6 star next for the OP, I'd recommend Apothecary. He becomes SO much better once you 6 star him and complete his masteries. He's pretty incredible.