1st Nothern War bookmark

[rquinio]

A bookmark set at the 1st Nothern War (1262).
Since it's the main timeframe of Netflix series season 1, it needs to be properly covered :)
Most history modding is already done, but there may be mistakes here and there to correct.

Missing mechanics:

• Brotherhood of sorcerers in the North
• Review of mage battle spells (cf Battle of Sodden Hill - https://witcher.fandom.com/wiki/Battle_of_Sodden_Hill)