Menphina's phase transition cast is labelled as "Selenain Mysteries". This is almost certainly supposed to be "Selenian Mysteries", as 'selenian' means 'of the moon' and 'selenain' is not meaningful to my knowledge.

Perhaps the intent was to be closer to the Greek, with "Selenas" being the possessive form in some dialects, but in that case the English form should likely be Selenaian. However, I suspect this is simply a swapping of the two vowels, and "Selenian" is the intended spelling.