[quote=@Double Capybara]
[@Kho]
How good is concealment? If I invest points in it does it mean Ilunabar can do stuff stealthy? How easy is for a god to notice her? And her avatars?
[/quote]

It means that she is nigh undetectable to gods of inferior detection. Unless they can see her with their two eyes or sense her (smell, hear, touch...taste O.O) she cannot be detected, even if she was hiding under a rock right in front of them.

Avatars not so much - though if the god's concealment is really high...