How Fated raids and rewards will work in Shadowlands Season 4
Shadowlands Season 4 starts on August 2 and there are a host of incoming features — new Mythic+ difficulty dungeons, for example — but one of the most novel and intriguing is the Fated affixes coming for Shadowlands raid instances Castle Nathria, Sanctum of Domination, and Sepulcher of the First Ones on a random, rotating system. These affixes increase the difficulty on the boss fights within the instance, while the raid chosen to be Fated that week will drop special Fated gear that’s of a higher ilevel than usual.
The affixes really appear to be interesting options to concentrate on learning. New dances for Prissy! 
As part of the Season there are special Broker vendors who can be found outside of each raid, and which sell Weapons, Trinkets, and other items from the three raid instances boosted to normal Fated raid ilevel. The catch? These items cost Puzzling Cartel Dinar, one Dinar per item. Once you’ve gotten and spent 3 such Puzzling Cartel Dinar, the vendors go away and you can’t interact with them anymore on that character. That means you can use the Puzzling Cartel Dinar to fill any gaping holes in your inventory, but getting and spending all of them too fast might mean you end up with an item you wanted at the time but now have seen drop several times, while the item you ended up wishing you had can’t be acquired because you spent your Dinar too early.
It appears we’ll need to be pretty careful what we purchase with those Dinar tokens as we shall only be able to get three. I probably would want to save mine until I figure out which items I need most rather than what I want instead.