[Soyweiser]

I found most sites not that bad. The one that gives you 5 ghouls each turn is nice because the ghouls keep up walls better than normal undead. And the shade/shadow one gives nice eth units. Not super in any way. But as you can easily summon a revenant it is almost free units. (And you only lose a revenant turn + one mage turn for each free unit spawning, a bargain).