fktifzobr
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The race doesn't change; what changes is the link to the damage effect.
But I looked at Menadou and Night Terror.
In the original fear attacks, Necromancy never occurs.
In the original poisons and crippling strikes, Fresh Blood always occurs.
Apparently, you can't combine them. If you remove fear or poison from the Knight, even without changing the damage effect, it seems like (imprecisely) he stops glitching out. It might even be that the damage effect has nothing to do with it (more likely it does).
I removed the poison attack