With Strange Eons, Even Fog May Die
The world you are is called Urdlesa. The world is predominantly ocean with Dunstwald the largest and only significant island in said ocean.
Roughly 3000 years ago the wizards on the then dominate eastern continent dun goofed and summoned three massive monsters, one in the air, one on the land, and one in sea that fucked shit up. Specifically Dunstwald was destroyed by a massive tidal wave and buried. This is why spellcasters are so rare. Human Wizards are now required to attend magic colleges with a very low survival rate, after which they are almost immediately sworn into a ruler’s survice. Clerics are equally rare as they are chosen by the Gods for a variety of reasons, essentially becoming their avatars on earth. It is a Paladins duty to defend and seek out new clerics in this world. Magic is not hated in this world, as it most people recognize that it improves their lives and most spellcasters are watched carefully now. There is still a lingering uneasiness and general sense of awe for those who can cast spells.
Calendar: A twelve-month system that matches ours. Names to come.