The Rise of Borderless Poster Cards This appeared to be market manipulation at first, and it may still be to some extent, but the trend has grown too large
Most decks dont need an HP-boosting card like this one, but you may find that either this card or another like it may help improve your decks win rate
However, it is true that the efficiency when looking only at this effect is poor, so when you have properly deadlocked or are attacking when the opponent is tapped out, use it while anticipating not only that timing but also the subsequent development to some extent
As such it does a lot of work in demonstrating quite how significant of a difference there is between a 2 drop and a 3 drop actually is
Its Wild Swing attack costs two water energy and deals 20 damage, but allows you to discard any water-type Pokmon from your bench and for every card you discard, Wild Swing will deal 40 additional damage