There are a number of elements to the new 2023 edition of the Guardian Games event in Destiny 2, but it largely centers around accumulating medallions and then cashing those in to help your class compete with the other two. Platinum medallions in particular offer the most progress and will also help you to progress a number of event challenges that allow you to earn various rewards. Fortunately, there's an easy way to quickly farm platinum medallions, provided you don't mind a bit of a mindless, loot cave-esque loop.

The central means of obtaining platinum medallions is by purchasing any of the Platinum Cards from Eva at the Tower. There are six of these in total and they can be repeatedly indefinitely, provided you can afford the modest cost of 1,500 Glimmer. (You also can't hold more than one for PvE and one for PvP/Gambit at a time.) But whereas some of these involve taking on a more time-intensive task, like completing a raid, the Platinum Cards - Neptune option provides a quicker route, provided you game the system a bit.

At least for this first week of the event, purchasing this Card will get you the Platinum Protector bounty. This asks you to defeat enemies on Neptune in one of several specific activities, with bonuses for Void and Strand final blows: