Wrapping It Up Foundations may ''just be a Core Set'' when you boil it down, but that doesn't make it less interesting from a value standpoint
It's probably not as good as Leyline of the Void (although even that's up for debate, I've never attacked for nine with a Leyline of the Void), but it also doesn't take up space in your sideboard
With a PSA 9 grade, its condition is excellent for a card from the original Pokmon Game set
Notably, they can't try to reduce the total power of creatures you control by removing them from the battlefield or reducing their power directly
The back and interior of the sleeves use the guild's colors to perfectly match both the guild and your deck
Whether or not you should sell a golden chocobo is a tough answer, but if you must have an answer right away, I'd find the card grading service I trust the most, get the chocobo in a slab and hold onto it