I think now is a good time to seriously consider how much you might want to pick up some of these, as the List slot is now being used in a different way at least it has been for a while
For example, white can easily punish a greedy opponent with cards that prevent them from pushing ahead like Leonin Arbiter or Smothering Tithe, however it also lacks ways to draw lots of cards for itself
Control players were comfortable tapping out for these because almost nothing could kill an untapped Ojutai, and if the opponent wanted to spend their turn killing The Scarab God, down hed come again the following turn
Players planning on running white would be wise to grab it in their draft
Crypt Incursion Lifegain decks can leverage Crypt Incursion
The chase Traveling Chocobo variants, for instance, are exclusive to Collector Boosters, as are surge foil and extended-art cards