Hey guys, I have a game next week and my opponent will likely be bringing his DE or his WoC. He has quite a big selection but his DE's usually include Cauldron, Hydras, Unkillable, Lvl 4 with lots of men to kill and corsairs or black guard. WoC I'm not so sure about but I can bet on him bringing a Nurgle DP and nurgle warriors, maybe some knights.
Any suggestions on what I can use to counter either/both of the above? I have a decently sized HE army and can pretty much get access/proxy anything I need so feel free to chuck in outlandish and crazy suggestions