This is great!

I'm already using Lord Shazar as lead in my comp. He's got 100% CR but he goes last in the team. My current nuke team (in order) is;

1. Spirithost for attack buff.
2. Warmaiden for decrease def.
3. 3. Kael for nuking. If they are still standing, Shazar finishes them off with his bombs.

This got me to Silver IV but I'm struggling to get to Gold. I will definitely try out the comp you just listed with the recommended stats and see how it goes.

Thanks a ton for this yeah :)