Hey guys, I'm attending my first major 50pts SR tournament soon and I really need some help finalising my two lists.

My main list is eThagrosh:

Thagrosh, the Messiah
Harrier
4x Shredders
Seraph
Angelius
Scythean
Typhon
2x Forsaken
Shepherd

And my backup list using T4 Abby:

Abby

Angelius
Carnivean
Scythean
Seraph
Raek
Harrier
4 x Shredder

2x Shepherd
3x Forsaken

I would add a tactical plan for both lists how ever this will be my first major tournament and my only tactic is having a scythean, thagrosh and a shredder with in 13inches of enemy warlock-caster.

Any suggestions would me appreciated.

Cheers
Spogg