Doomstacking as Kemmler?

Topic. How and what tends to be the best setup? Between his bonus to ambushing, devastating flanker, and unholy regeneration on the hexwraiths and the cairn wraiths, these are the obvious choice. However, they are pretty fragile. Cairn Wraiths in particular have half the unit count and are a bit light on health.

Then against Bretonnia, the hexwraiths are good but hard to acquire, get pretty well matched by knights of the realm and yeeted-and-deleted by grail units. Cairn Wraiths are great but don't go well against cavalry.

What I've done so far this game is have a half stack of spearmen (8-12 skelly spears) and 4-6 cairn wraiths (swapping out spears one by one as I find more wraiths) and basically building a double line of spears, 4 up and 4 back. Cairn wraiths in the middle for bite. With two necromancers and Krell this has been an incredible stack I've won some astonishing battles at full health with - 3:1 odds kinda thing.

Mid-late game (well in this case like turn 40 lmao) I have basically a half stack of hexwraiths (6) and half stack of cairn wraiths (8), fully teched out. It's an awesome stack IF you can land an ambush and its extremely fragile if you can't.

So many things do magic or fire damage that the paper thin wraiths struggle a lot if you can't get the ambush off - and the AI seems to be very good at spotting ambushes (playing on VH).

What do you all do for Kemmler's doomstack?