On the other hand, undead have problems with healing spells, maybe that balances it out.
Skin Graft is a really strong skill. Using it two memory slots is ok. Wether I like making it a source skill, I'm not sure. More likely not. It depends on how easily you can get source points after Act 1. But I have a general aversion against skills using a restricted resource, so I'm biased.
If source points are common later (I think they will), then it's also not much of a balance. They should have restricted Skin Graft to one use a fight for the whole group. Or is it already this way?
