1) Poison sorceress. You just need to create a set and you can safely farm. End game gear allows you to run the T10 completely stress-free. After five, six maps in a row Phobos are not there or will give you to avoid him. A few days ago, a few hours of T10 spam and only one death. I went too far and fell into the group of monsters that kept me in the FHR, and there was nothing I could do. Just a decision mistake.
All you don't do is kill Deimoss. You can deal with one corrupted hero, but with three at once, and Deimoss is a sentence. Map and boss made for a stupid barb / pal.
Samael is killable. I died at the end of something I didn't see.
2? Assassin Psi Storm. Juicer for mobs. Literally. Three campaign stages with a set up and max energy runes filled everywhere. I have to assemble such a setup for a sorceress and Psi Storm with a relic. I'll see how it works.
3) The Trinity Beam paladin should work as well.