Competitive play is a huge part of any TCG, and if a dud of a set were to release right as the biggest event in the game was due to take place for the first time, we could be talking about a very different trajectory for the game
Yisan, the Wanderer Bard Birthing Pod-style decks are always popular for their value and flexibility, and Yisan, the Wanderer Bard is Magic's best Pod commander
I had a mono-black deck with Oversold Cemetery, Dawn of the Dead, and Patriarchs Bidding
Best of all, only Sauron, the Dark Lord has good protection with its Ward ability, which will often make it practically hexproof since so few decks would casually sacrifice their legendary Commander just to lower Sauron's shields and target him with removal or other effects.
Little John, Resourceful Outlaw Whilst Robin Hood, Champion of Sherwood rewards you for aggressive challenger focused strategies, steel also has some of the best defensive tools on the market with access to both Bodyguards and the powerful Resist gameplay mechanics
Territorial Kavu is an honorable mention in the rare slot, and for good reason