Originally Posted by
Cobblemaniac
Raid battles are a matter of reaching maximum 250 divine souls (normal and expert drops) and 100 devil souls (ragnarok drops) to get a set list of rewards, along with gathering raid gacha tickets which drop from every raid. You can host the raid yourself using AP (and summon drops from the lower tier raid, you need 3 summon drops from normal to host an expert for example), or you can join someone's raid using BP. You'll likely be doing the latter option, and that's how most new players will clear this event.
Should a new player do it? No reason not to. Newbies will most often get carried by higher level players in raids, and besides the rewards are great, even if you don't main the element. SSR eido and weapons are a must to keep unless they're trash, you get 23 premium gacha tickets and 3k jewels if you get all the divine and devil souls, and you get quite a lot of stuff from the raid gacha tickets, which drop pretty often from raids.