The true number is hard to estimate because most players see only a slice of the card pool at any given time the sets that were legal when they played, the cards their friends owned, and whatever showed up in tournaments they followed
Closest is the LOTR Holiday Edition, and theres no sign that they are going to do something like that here
In mono red this would be far more of a lock in
An epic battle is guaranteed and thanks to the large amount of unique cards the replayability is enormous
MTG has created wonderfully detailed worlds, histories, and characters, but it doesnt hurt sometimes to rely on well-known story material
Whether you prefer the calculated synergy of Sapphire & Emerald or the daring aggression of Ruby & Amber, theres something here to match your playstyle