I have found that the most consistent drafting experience is to be had when you include as few narrow cards as possible and sideboard cards very much fall into that group
Destiny End Dragoon can't be destroyed by card effects, which means opponents can only attack over it
Then, Madam Mim can bounce him safely back into your hand, setting up a vicious cycle that, if it isn't stopped, can give you a huge lore lead
Players will need to stay on top of the promo card events, as the current events are only available for a limited time
These aren't tournament-legal (they come with a distinct card back pattern), but they're excellent reference points for competitive players and popular collector items for anyone who follows the competitive scene
Phyrexian Arena : Not having a body is both an advantage and a disadvantage