It is a cute mechanic, but the Serpent's stats are nowhere powerful enough to justify a crippling mechanism, and it does highlight how the flavour of the fantasy sometimes needs to be balanced with actual playability
The extra physical card is better in constructed and so is the ability to go three deep into your deck
(See why hexproof is so polarizing?) Hexproof is a variation on an ability called shroud, which prevents creatures from being the target of any spell or ability, including yours
So, with different type of tin available and each containing different combinations of booster packs and accessories, heres each one in turn, listed from largest to smallest, with details of what we think the advantages and disadvantages are of each type
A sentence describing the Pokmon's special abilities can be found on the lower portion above the copyright data
#63 (Pokemon Generations | Pokemon Cards) prices are based on the historic sales