Most of the power in this deck comes from cost adjustment, making Hero creatures cheaper to cast, and synergizing this with the Captain America, Team Leader ability, which gives them Vigilance and Haste until the end of the turn, while then putting a +1/+1 counter on both the creature and Captain America
During the course of reporting on this story, I monitored several vendors on the site
Burn decks can deal out loads of damage but against combo decks, decks that can gain infinite life, decks chock full of counterspells, and the challenge of contending with multiple opponents, mono-red burn is widely considered weaker than many other types of Commander decks
Anyone who dabbles in Commander knows at least a couple of players with decks built for these tribes
Teferi draws you a card with his +1 and untaps two lands