Well, Magic sets keep coming and they dont stop coming (RIP Steve Harwell), and WotC is determined to continue jamming new borders, foil treatments, serialized bait, and much, much more into each new Play booster and Collector booster that hits the scene
You can just leave him up and fly him around from location to location each turn, gaining lore as you go
These articles would discuss which new cards could be good and how they would fit into existing decks or make new ones
Once it actually hits the battlefield, attacking with dragons draws you cards and lets you slam free permanents onto the field
Obviously, the cards that are in development need to be proxied, but I was surprised to find out that R&D didn't get upcoming sets much sooner than the rest of the world did.