The Shaymin EX (77A / 108) card can be found in the Roaring Skies set.
Recently sold 8 times and based on those sales is worth around £24.94.
Currently, there is 1 open listing for this card on ebay.
This card sells in the range of £11.64 to £38.24, making it quite volatile.
This Rare Holo Ex card was illustrated by TOKIYA.
The fact that it is a EX card makes it one of the more valuable cards.