Even if the win rate is pretty low, it's still quicker to play three games with Leyline of Resonance and win one or two of them than it is to rack up a single victory with slower MTG Arena decks
If it ends up being a Psychic Pokmon, you can put it in your hand
In my experience, the Game Changers that win the most games are the ones that generate persistent card advantage: Rhystic Study, Smothering Tithe, Necropotence
Mogis, God of Slaughter deals damage unless opponents are willing to sacrifice a creature, Fate Unraveler deals damage whenever an opponent draws a card, and Blood Seeker deals damage whenever an opponent plays a creature
After all, trading cards were meant to be played with and even rare cards are no exception when you first receive them as kids