I‘m gonna play this list in a local tournament soon:
Petrifex
Arkhan
Liege Kavalos, General, Godbone
Soulmason, Gothizzar Cartouche
30 Mortek Guard
2x5 Kavalos
2 Mortek Crawler
Kavalos Battalion
Bone Tithe Shrieker
100% winrate so far, with the Mortek Crawler being the most efficient so far (tried the same core list but with morghasts/ immortis guard before)