Three of the Commander decks included in the set will contain legendary cards based on certain iterations of the Doctor, which players will be able to choose as their commander
Nissa, Vital Force Nissa, Vital Force has always stood out as a prominent planeswalker in my mind because you can ultimate it the turn after you play, or even sooner with cards like Pir, Imaginative Rascal
Theres a bit of a conflict between tapping out for fatties and holding up mana after all
Savra can also provide some incidental lifegain if you sacrifice black/green creatures, but the power here is so concentrated in the Edict effect that you really dont need to build around that
At that time, Standard was looking fun and healthy
Others are unique to Collector Boosters and do not have mechanical counterparts in Commander decks