Zada, Hedron Grinder has an ability thats like heroic, but the copies it creates wont trigger heroic
Haytham Kenway Haytham Kenway is a super knight lord, which is valuable in any of those decks that run white and blue
The future value of cards also factors into this
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
Chronicles included cards from the first four expansions: Arabian Nights, Antiquities, Legends, and The Dark
each creature you control with a counter on it has "Tap: Add one green mana to your mana pool"