The Arceus V (166 / 172) card can be found in the Brilliant Stars set.
Recently sold 17 times and based on those sales is worth around £31.00.
Currently, there are 26 open listings for this card on ebay.
This card sells in the range of £23.71 to £38.29, making it quite stable.
This is a Rare Ultra card.
The fact that it is a V card makes it one of the more valuable cards.