The Celebi (145 / 144) card can be found in the Skyridge set.
Recently sold 6 times and based on those sales is worth around £134.55.
Currently, there are 6 open listings for this card on ebay.
This card sells in the range of £63.39 to £205.71, making it highly volatile.
This Rare Secret card was illustrated by Mitsuhiro Arita.