Make sure you meet all the requirements in order to start a trials match, and those are: 1.) You must have a three man fire team, no more, no less. 2.) Every person in the fire team must have purchased a trials passage from brother Vance in the reef. 3.) Every person in the fire team must be level 40 and [url=https://www.destinygamewiki.com/wiki/Trials_of_Osiris]331-400[/url] light or higher. Using "boons" is optional, but boons must be selected before starting your first match of trials if you want to use them. To enable boons, Open the character option screen, scroll to the right and highlight your trials passage and press "triangle" (ps), then highlight the boons that you want and use "X" to select each boon, "mercy of osiris", "favor of osiris", and "boldness". Using Boons makes it easier to achieve a flawless card, however the boons you select are at your option.