Unlimited is a more valuable set than Revised
This type of effects can either be a way to balance the power of your Pokmon or part of some mechanic aimed to make them more effective (for example increasing the damage of their next moves)
In addition to Pokmon cards, the platform also features other popular IPs like One Piece, expanding the collection and audience base
During the 2nd Generation of the Pokemon franchise's main series games, there were quite a few updates and additions to other forms of media as well
Though if you are running those three, and you have creatures, this is pretty amazing
Heres why collectors trust Prismatic Defender: Perfect Sizing for Pokmon Cards non-PVC, acid-free safe materials, crystal clear finish for maximum display quality, smooth edges to prevent scratches, made to fit in top loaders & binders