Do keep in mind, though, that they are not the same character
Even that doesn't see play now
While this might be changing in the future, for now, this essentially adds $19.99 to the cost of building a deck (since all or nearly all tier decks have at least some adventure cards), raising the average price of building a tier deck to $106.42 (although your second, third, and fourth tier decks will be slightly cheaper because you'll already have the Adventure cards)
Hence you can have a 1/1 with deathtouch kill any creature with any amount of toughness
Green ramp decks now have Karn, Ugin, Sky Sovereign, Garruks and Nissas as well as card quality non-creatures at the low end
With that, the player draws an extra card at their end step