From what I've found the spirit of torment can return some if 3 enemies died which is a tad unreliable. I mean it's decent enough against say skaven or goblin armies with loads of easy to kill stuff. But basicly pointles against more elite armies.
Then there's the guardian of souls, but that's only 1 spell given the rule of 1 so that ain't going to get that far either.
The black coach returns D3 from lvl 1 empowerment onward, but that's our most expensive model so having it every single list I make just seems odd..
And there's lady olyander, but Always playing with a mortarch seems just as odd as having the black coach in every list.
I'm mostly surprised there's so few reliably decent variants. Thought deaths whole deal was the whole endless replenishing horde thing with the occasional big scary monster.
Which of the allies are decent for this? I'd prefer it if they do bring more than simply just the healing, either by having additional synergy or by just being that good.
Also, do any of the allies have the option of taking nighthaunt artifacts and such? Similar to how a Tzeentch army can use slaves to darkness to plug certain gaps but the added keyword allows em to still take those things and such?