The features listed on the roadmap like difficulty modes, decoration and playable TCG is not available in early access yet, I plan to add them through future updates
We already know just how amazing Glorybringer is, as it has been in copious amounts of winning decks for the past year
Pauper is a format where as long as a card was printed at the common rarity, the card is playable in it (unless it is banned or illegal in all formats, of course)
When time began, the Ur-Dragon began with it
Stoneforge Mystic Not only can Stoneforge Mystic tutor up a piece of equipment from your library right into your hand, but it is also strong in Modern Hammer Time decklists, making it quite useful outside of just Commander
He is not useless without other zombies but certainly on the weak side