I have 2 cards that I don't think are fake but I haven't seen any other cards like it before. The cards are Tauros And Banette, they are both from ex Crystal Guardians and both have their names in Gold and HP in Gold and both have a ex Crystal Guardians symbol on the artwork. They both have the same rarity (Ultra Rare I believe) of a shiny silver star. I checked the sides of the cards and they both have the middle layer. I know they are most likely real but I want to make sure with people that would probably of seen cards like this before. I have seen a normal Tauros and Banette card on the internet, they both look completely normal but mine are different. I am hoping they are real and that the features of them would add a bit more value to them. Thanks.
Those are real.
They are alternate holos from those sets.
Just like packs now have one card inserted with a reverse holo pattern, some sets from this time period did their alternate holo versions looking like you described.