The Palkia GX (119 / 131) card can be found in the Forbidden Light set.
Recently sold 7 times and based on those sales is worth around £8.84.
Currently, there are 3 open listings for this card on ebay.
This card sells in the range of £5.35 to £12.33, making it stable.
This Rare Ultra card was illustrated by 5ban Graphics.
The fact that it is a GX card makes it one of the more valuable cards.