You must understand the game state to properly deduce how much you need and how much you can afford (or often have to) to risk
Every creature printed with a power of at least one can win the game outright by swinging
Bordering on the too good even if he doesn't even get put into hand in over 50% of games
If you invest heavily into powering up one creature, only for your opponent to kill in with something like an Infrenal Grasp or wipe your board with a Wrath of God, thats a massive disadvantage to be in
The best options are cheap, efficient, and repeatable
It comes from the final main expansion in the Sun and Moon Series that is no longer in production, and has a very low pull rate, which makes it one of the rarest, most valuable, and most expensive Sun and Moon cards