Some Events or Challenges may award certain items, which can then be used to gain access to certain Challenges or Challenge Rounds.
Some items will be required to enter a certain Challenge or Challenge Round, in which case you simply need to own that item; and some will be required to play the Challenge or Challenge Round, in which case an instance of that item will be consumed.
Some items will be required to enter a certain Challenge or Challenge Round, in which case you simply need to own that item; and some will be required to play the Challenge or Challenge Round, in which case an instance of that item will be consumed.