The Entei (6 / 64) card can be found in the Neo Revelation 1st Edition set.
Recently sold 3 times and based on those sales is worth around £252.31.
Currently, there are 5 open listings for this card on ebay.
This card sells in the range of £161.40 to £343.22, making it highly volatile.
This Rare Holo card was illustrated by Ken Sugimori.