Green has some cool effects, like being able to place more mana and being able to drop some big-hitting creatures
Additionally, when it was unveiled at MagicFest Richmond at long last, it was revealed to also contain in each pack a "playtest" card, which could be one among a very large list of cards that were never released and probably won't ever be in the future, either
Legendary Creature - Demon Spirit Color tag templates(None) Solemn Simulacrum When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle
no additional purchases required to start the adventure
As well as the 25 reprints, Celebrations includes 25 brand new cards (are you sensing a theme here?), some of which combine gameplay mechanics from older sets with more recent additions to the Pokdex
There are several great Commanders that play to this strategy