Cards issued as a part of that print run are commonly known as shadowless cards because they do not include a drop shadow that was added to cards for future print runs
Reverse Holographic (Reverse Holo) Cards Definition: Reverse holographic cards feature a shiny, reflective foil on the cards background, rather than the Pokmon itself
In short, Pokemon cards can be super valuable and they can be worth as little as a penny a card
Sylveon in its characteristic ribbon-wrapped form with Special Illustration Rare treatment
Sure, Mew Prime has the attack See Off, which lets you Lost Zone a Pokmon from your deck for 1 P Energy, but leaving your Mew Prime active is giving your opponent a easy prize to pick off with cards like Uxie
It doesnt have particularly effective attacks until it reaches at least level 40, but if you have high friendship with Chansey, itll evolve into a Blissey before then anyway