Pokemon has a plethora of introductory products that were created with new players, young and old, in mind and my recommendation is the Pokemon Battle Academy
All of them seem to be working in harmony around an abandoned or run-down building
Ideally, they take a cheap original card that shares as many characteristics as possible with the card that should be proxied
For example, this one is Jund, on the plane of Alara
Decks Played Joco Kellan, Planar Trailblazer (Red Aggro) Bon Azusa, Lost but Seeking (Ramp/Value) Law Feldon, Ronom Excavator (Red Aggro) Mon Aragorn, King of Gondor (Midrange/Value) Dex Aminatou, the Fateshifter (Control/Combo) Martin The Ur-Dragon (Big Mana / Typal Dragons) Jesse Golos, Tireless Pilgrim (5C Toolbox) JM Winter, Cynical Opportunist (Golgari Reanimator) Notes Aminatou and Golos showed strong consistency and control over longer games
Its the combination of pushed damage output and immediate impact that make this pair of goblins so threatening