What are the features of the Trials of Osiris in Destiny2?

Trials of Osiris works on a card-based system. Players buy a Trials card from Saint-14 in the Tower each weekend (with various bonuses attached). The cards keep track of their wins, giving them special rewards once they reach certain thresholds, without holding a button to reset their card to zero.
Yes, there are complications that will take time. Or you can take trials carries destiny 2. So the experienced pros will do the test for you. You can watch them work