If you're playing a multiplayer game, that potentially quadruples your mana production
Since both Llanowar Elves and Badgermole Cub are legal in Standard, this could be the core of a new Green Stompy deck
He also brings a competitive aspect to the game buffing your in-play Princess characters
The options for Starter Decks are Amethyst and Amber, Emerald and Ruby, or Sapphire and Steel
Prices move over time, so use these as reference points and always check recent sold listings before you buy or sell
Buying cards is an investment, and as such the value can go down as well as up, so its worth doing your homework before purchasing rare MTG cards whether its for a deck, a collection, or to sell on later