There isnt a great deal more to learn in the set, aside from the Resist keyword, which allows a card to absorb damage when Challenged
While Wizards owns a lot of the IP on Magic cards (the art, mana symbols, etc.) there is t nothing illegal about a piece of cardboard the same size of a Magic card with some unique custom art that might look a bit like a Mox, an Underground Sea, or a Wheel of Fortune
These card sleeve designs are also available as actual posters, if you want to turn your room into a travel agency for a selection of fictitious destinations
Attack 1:[W] Healing Water
They toyed with the idea during Digi-Fest events and Ultimate Cup online events by putting cards on the bottom and drawing a new hand, though because the game does not shuffle the deck after your initial draw, savvy players would know which cards would appear if they cycled the deck once