At our local gaming club we have one person who's a great guy, but his nurgle army is consistently laying low most of the players. I've found he tends to run blight kings and tries to buff then whilst having either debuff auras or FNPs on them to make then near indestructible. Once in melee he tends to just mulch anything, and due to buffs his slow units can theoretically charge me turn one. He also runs spells that let him snipe characters out of LOS with mortal wounds that chip away at my support.
Between all of this, I'm in a pickle. I'm playing legions of negash, tomb kings and or night haunt. I've found that If I charge the kings, my units die. If I wait back he just whittles my heroes and charges me regardless. If I try to get to heroes, I struggle to kill them due to toughness. I don't know how I beat them, and it is getting annoying. I need help.
The list usually runs a few great unclean ones, rotticus, a chaos shrine, some wizards avd buff heroes, and blight kings.