To join us all you need to is be prepared to give up your soul. Be ready to fight with the Viridi at every given opportunity. But also know when to back down when the Caelum get involved.
The Viridi will one day bow down to us. We will destroy them one by one until their land is ours!
We live in a dark cave. Full of corruption and hatred. We want to steal the overworld.
Realistically if you have the slightest bit of darkness in your heart then joining The Ostrinus is perfect for you. Evil is enlightening.