As a cycle of popular creatures, Jin-Gitaxias and the other new Praetor sagas may have some additional collectible value as a set even if the cards dont end up seeing competitive play
Like Sol Ring did years before it, it fast became a firm auto-include in Commander decks, providing straightforward, no nonsense efficiency
It's awesome and one of my favorite commons ever printed for multiplayer
For later appearances of "Doppleganger", see "Doppleganger" (later anime)
A fracture foil appears in Collector boosters 1% of the time
Izzet Phoenix may be the best deck, but Id stop well short of clear. Dredge put up similarly impressive numbers in terms of Day 2 and Top 8 representation at Grand Prix Los Angeles, and the Izzet Phoenix versus Dredge matchup is close enough that getting an edge there is unlikely to be an inflection point for either strategy