The Sylveon GX (SV76) card can be found in the Hidden Fates set.
Recently sold 13 times and based on those sales is worth around £39.00.
Currently, there are 15 open listings for this card on ebay.
This card sells in the range of £26.82 to £51.18, making it quite volatile.
This Rare Shiny GX card was illustrated by 5ban Graphics.
The fact that it is a GX card makes it one of the more valuable cards.