[Nagot Gick Fel]

Endoperez said:
Also, remember to choose evil enemies. Ermor, C'tis, Mictlan, Jotunheim, Abysia, maybe Vanheim and Pangaea too. If you choose their themes here are (most) evil ones: Abysia (both), Vanheim (Helheim), Jotunheim (Niefelheim), Ulm (Black Forest), C'tis (Desert Tombs), Marignon (Diabolical Faith), two Ermor themes or Pangaea (Carrion Woods) if you want a challenge. R'lyeh could also be seen as evil.

You forgot Pythium in the list. Hydras are evil (just ask Herakles), both Pythium themes use Hydras, therefore both Pythium themes are evil. QED.