Mod: MA Skavenblight 1.15 hotfix

[Sombre]

Death frenzy and a few of the other spells (vermintide particularly) might still be a bit good, but we'll see. I always think national spells should be markedly superior to generic spells to encourage their use. Favour of Nurglitch for example is waaaay better than poison ward, but is quite niche in use and isn't anything balance breaking (especially since poison doesn't get much love in dom3).