Does Cthulu count as “something old”?
Asking for a friend.
please do not raise old gods, new gods, borrowed gods, or blue gods
It’s your wedding day honey you raise whatever the hell you want.
It’s bad form to sacrifice your wedding guests to the Old Ones, and conversely to invite the Old Ones to your wedding just so your friends can kill them.
Besides, I’m not sure that “battle dress” makes for a great dress code on an invitation – not everyone can afford formal fighting gear!
Remember, kids, just because you’re locked in a predestined war from before time began is no excuse to be rude about it.