Yeah, I also dont find it OP.
But I find it... Bad for gameplay. This card, combined with Afla, is a bit stronger than fractal devourers, but serves the same purpose. Draining quanta to make your opponent unable to play anything. Being unable to play is boring for the opponent, ruining the gaming experience.
That of course is valid only for "casual" players. As a competitive strategy, its good as any other.