When the player arrives at Varrock Palace, go to the library and you will find a bright blue book on the bookcase, read it, then talk to Reldo. Choose one of the gangs to join, to complete this quest you will need two shield halves.
The Shield of Arrav quest is a medium-length Novice difficulty quest. This quest requires a trusted player and 20 OSRS Gold to complete this quest and you will be rewarded with OSRS Items after completing the quest. So let's first understand how to join these gangs.
Players can choose to join the Phoenix Gang or the Black Arm Gang, join any gang, you will get half of the shield, and then follow the NPC's requirements to do the task, you will eventually get the other half of the shield.
When you decide to join the Black Arm Gang, it's time to put your partner to the test. After getting the other half of the shield, take it back to the Warlock Museum, find the curator Haig Helen and talk to them. Your partner will now need to trade half of their certificate to you so you can combine it into a full certificate. This process is easier if you have a trusted partner.
Our last stop is King Roald in the castle, and you have to give him the certificate. Doing so will complete the OSRS quest the Shield of Arrav. With a trusted partner, you don't even have to Buy OSRS Gold externally. and soon, you'll earn OSRS GP rewards, quest points, and even honors you've picked up at the Varrock Museum.