pokemon cards horsea (67/64) - Pokémon Night Wanderer (sv6a) DESIGN Inc Horsea (Aquapolis 84) - Bulbapedia,

In the early game, when your hand will be loaded full of Dragons as you wont have enough mana to play them yet, this card can deal a lot of damage for only two mana

Everyone has a copy because it shows up in 20 different decks, it's not quite bad enough to kick out of the deck right away when you're doing quick precon upgrades, and it's a budget card to boot, so it also gets into the budget builds

While the main focus of this set was obviously cramming in as many important characters as possible, it's not only new cards - there are some choice reprints as well

Even if you can't steal the game in a few turns, Belle is immensely helpful for generating much-needed resources

In fact, it was so popular that Nintendo held a contest