Youre allowed to have multiple versions of the same character in your deck, and those characters can co-exist on the game board
While incredibly strong, The Earth CrystalThe Earth Crystal shares a similar problem with The Water CrystalThe Water Crystal
It includes a card catalog (great for keeping track of your collection and for making a wish list of desired cards), a deck builder, how-to-play videos and tutorials, and a Lore counter to help keep score more easily while playing
Or maybe you pair it with Shere Khan - Menacing Predator and gain 1 lore each time Lefou challenges
Really, you should be playing at least Reality Shift, Rapid Hybridization and Pongify in any mono blue deck
They are rare collectibles, which means there are not a lot of them for sale and people who crack them, expect to have hit the jackpot