Scion of the Ur-Dragon is also the best Dragon commander, because it can be any Dragon in your deck, and you can very easily kill off your opponents in a single attack from this shapeshifting beast of a Creature
Guide of Souls is very easy to generate energy with, and its attack trigger is enough to make virtually any creature into a threat
The banning of Whitebeard Leader, along with the restrictions placed on Zoro and Law decks, aims to level the playing field across all deck archetypes
Most singleton formats use the Vintage banlist which means a lot of extremely powerful ramp cards are available to take advantage of like Cultivate, Harrow, and Blighted Woodland
With access to creating Saproling, Soldier, Goblin, and even treasure tokens, the whole strategy with this deck is so spam token generators like Grand Crescendo and Black Market Tycoon