In this state, you can cast enough spells to win with Aetherflux Reservoir, using a finisher from one of our opponents with Praetor's Grasp (hello, Thassa's Oracle!) or using our commander, Gix, Yawgmoth Praetor, activating his second ability to discard your huge new hand, exiling many cards from an opponent's library to cast them and win using their deck
The price may not remain low for long
Dragons of Tarkir gave us five newcomers (Dragonlord Silumgar, Dragonlord Atarka, etc.), Core Set 2019 gave us retrains of the originals (Arcades, the Strategist, Nicol Bolas, the Ravager), Strixhaven added five more as the namesakes of the different schools (Tanazir Quandrix, Beledros Witherbloom, etc.), and the five metal dragons from Baldur's Gate were also given the double creature type (Ancient Bronze Dragon, Ancient Copper Dragon, etc.)
Covetous Urge is a very powerful spell, as wellit lets you pluck any nonland card from an opponents hand (or failing that, graveyard) and cast it (you do still need to pay for it, but it does fix your mana)
As RDW style lists often have to aim some burn at creatures and things it is very useful to have big sources of damage and so Thundermaw is pretty tasty