trading card game has the benefit of never being subject to rotation like other collectible card games so cards are never made officially obsolete by new expansions thousands of possible card combinations and 20 years of rules and gameplay additions (not to mention rare and expensive cards) means that the game can be intimidating for newcomers to dive into
But its a lot deeper than that
It does nothing by itself, but other cards may interact with it (see below)
Our friend Summon: Bahamut is an enchantment, a creature, a saga, and a dragon wherever it may be
Its awesome that Phelia, Exuberant Shepherd is a 2-drop with such a powerful and versatile effect
Weakness: Lightning (x2) Resistance: Fighting (-30) Retreat: 2 Shaymin - Colorless - HP70 Basic Pokemon [C] Flower Bloom: Search your discard pile for up to 2 Energy cards, reveal them, and put them in your hand