Because all of these PvP battles are happening on a different server, the moment you join in the battles Buy OSRS Gold, all your items and levels are lost and you'll receive a standard set of stats . You'll also be able to choose a style of combat that will boost certain stats. You then pick a second combat style that is different from the one you chose.
After the fights are over and you've earned rank points, you'll be rewarded and reward points when you win a PvP game (1v1 fight or tournament) which the game organizes for you. Although you'll be able to organize tournaments and duels manually but they won't be rewarded with points.
In line with efforts to decrease RMT and improve the user experience, all rewards that aren't cosmetic will only be available in PvP-enabled areas. It is not possible to take on anything except other players using them, either. Certain rewards cannot be traded, whereas you'd expect them to be traded. This is to reduce the appeal of RMT spammers and scammers searching for goods.
You can view the complete listing of the rules and rewards, information about grouping, and much more in the updated, modern PvP experience that replaces the old Duel Arena on Old School RuneScape RuneScape Gold 2007. OSRS is also celebrating its 9th anniversary.