Surely, I missed out on someones favorite tech card or overperformer
In my opinion, the strongest things you can do in Mono Red are: "Glass cannon" decks that either quickly pop off and win before opponents can stabilize, like Storm, Krenko, Purphoros, Slicer Crushing nonbasic lands, aka defeating a large chunk of players with a single Blood Moon The problem with these two strengths is that they aren't always the right pick for casual tables
City on Fire City on Fire is another of those overly expensive enchantments that has a massive payoff
It's a discussion you want to have prior to starting the game
Essentially it's a more niche Altar of the Brood but you can also mill yourself to win with Thassa's Oracle or whatever
With brand-new art that shows off all the beauty and terror of this Gothic plane, these treatments are a great way to flaunt your favorite cards