The Mewtwo (144 / 146) card can be found in the Legends Awakened set.
Recently sold 2 times and based on those sales is worth around £31.34.
Currently, there are 9 open listings for this card on ebay.
This card sells in the range of £9.99 to £52.69, making it highly volatile.
This Rare Holo Lv X card was illustrated by Shizurow.