I'm trying to make a better clan boss team but I am stuck at brutal (4 times to get grandmaster chest) for like a month.

I am currently using Jareg, Tayrel, Royal Guard, Juliana and Apothecary for my clan boss team

I knew I got some champ which is good against clan boss such as occult brawler, frozen banshee, Raglin, bulwark etc. but how can i progressively fit into my teams. Is it possible to make occult brawler, frozen banshee, bulwark in a same team which can maximum the damage output by HP burn or poison?

For spider, I currently stuck at 14 and which I think I can possibly progress more if I got good artifacts.

I'm using Big'un, RG, Raglin, Miscreated monster and Tayrel

How can I corporate or substitute my team using Ignatius, Kantra the Cyclone or cold heart, which are all good against spider?