The Leafeon (99 / 100) card can be found in the Majestic Dawn set.
Recently sold 7 times and based on those sales is worth around £80.35.
Currently, there are 3 open listings for this card on ebay.
This card sells in the range of £18.65 to £142.05, making it highly volatile.
This Rare Holo Lv X card was illustrated by Ryo Ueda.