The Entei (6 / 64) card can be found in the Neo Revelation Unlimited set.
Recently sold 15 times and based on those sales is worth around £56.00.
Currently, there are 6 open listings for this card on ebay.
This card sells in the range of £34.21 to £77.79, making it highly volatile.
This Rare Holo card was illustrated by Ken Sugimori.