Citygods are individuals who have been dramatically corrupted through an unknown process. Each seems to have been associated with a particular aspect of Nodd and, in doing so, paired with an opposing aspect.
Citygods are confined to their quarters, which could be considered a small palace as much as a prison. Few have any firsthand tales to tell and it is only the Unseen Ones who deal directly with the citygods. It is known, however, that they are imminently powerful and wildly corrupted. The unlucky few thrown to the citygods as playthings never come out unscathed. While few remember any concrete events that occurred almost all who have ever been around one come away "blessed."
Citygod's Blessing
A citygod's presence alone is enough to warp every aspect of reality nearby in ways varying based on their mood, individual demeanor, and particular aspect. As such, the term "bless" is dubious indeed.
A citizen acting particularly strangely might be said to be "blessed" as something of a slang usage.