Like most Pokmon cards, the value of Seadra depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Battle Styles)
Joining the 99 of another general, its easy to see him falling into The Mimeoplasm decks, but the general that personally calls out to me for Bruvac is is Lazav, Dimir Mastermind
All of that being said, Ionos Bellibolt ex doesnt need a huge reason for it to see play outside of its own ability
On one hand, fans say that the English products give you more for your money, while collectors often find that Japanese products will contain less ''doubles'' and produce less waste of low-end cards
Enchantment - Aura Color tag templates(None) Oakhame Adversary This spell costs less to cast if an opponent controls a green permanent