I see a Tower so an UK team makes the most sense.  You can use Skullcrusher to tank the stun, or build a champion really tanky, or use an Ally Protection champ to allow anyone to take it.

As a general core Id suggest Tower / Doompriest / Stun Champ / Fahrakin / Longbeard.

Hmmm well idea thank you I'll test it 

Tested not a great run I think just because only one unkillable only hit 11 mil 

Stun target ? Why? He has so many buff extender. Lanakis,Goodseeker, Sandlashed,Anchorite He just need set speed for heroes, and extending block debuff to 3 turn. He has Kreela too, and Turvold, Michinaki...

If you mean Block Damage, it can't be extended.

Did you run for a full 50 turns?  

Couldn't even survive for 30

Did you follow any guides for how to actually tune your team? You can't just throw five champs with random speeds.

The team comp which ShortOnSkillz referenced can be found here: https://deadwoodjedi.com/speed-tunes/slow-hellcat-unkillable/

Since you're using Doompriest, you don't need a debuff blocker for the stun. That lets you run the five he mentioned (Tower, Doompriest, Skullcrusher, Fatman, Longbeard). Also, since none of those are poisoners, I'd recommend putting at least one champ in a Toxic set.

That ShortOnSkillz guy has no idea what he's talking about, he's never made a clan boss comp in his life. 

Accurate.  I use only builds of Quinns.

Smart man. :)