Finally, Red + Green Burn tends to punish what Green hates, namely all-things winged or artificial (Clan Defiance, Cindervines, Ruric Thar, the Unbowed, etc.), or staples Burn onto already-useful effects (Vengeful Rebirth, Exploding Borders, etc.)
The card pool is enormous, the decks are powerful, and games can end very quickly
The other thing thats significant is that since there has never really been a Boros general like this, while Boros staples have some upside because, of course they do, a bunch of brand new cards are about to get a bump and that means they go from bulk to not bulk and thats the best way to be
It's a solid card that doesn't outshine the others that came before it