Theyre played in paper and through direct challenges or an occasional WotC hosted event on MTGO or MTGA, as card availability permits
The advantages, though, are more than impressive: You get to explore cards and themes unlike anywhere else in Magic
Unfortunately, we are far enough away from Kamigawa Neon Dynasty that I dont expect any further bumps in popularity for the time being
That being said, there's another clear reason this may be a change coming now, and that's the inclusion of Spacecraft into the bucket
""Magic: The Gathering -- FINAL FANTASY" will be holding a Japan-only campaign on June 6th where players can receive three types of promo cards"
Ryan: This card is solid, granting a ton of effects to your modified creatures but not so much that your opponents will feel good about burning a removal spell to get rid of it