It's an extremely clunky alternative win condition
Pokemon promos are given out all over the place, and this Grass Energy is one of the most limited due to how small the community was at the time
Not to mention, you have the chance to get a nonbasic land with Planar Genesis, which could shift the game in your favor depending on what you hit
Aminatou, Veil Piercer Similar to its planeswalker counterpart, Aminatou, Veil Piercer allows you to rearrange the top card of your library, but with a twist
Trainers who capture Chien-Pao admire its power and ability to inflict significant damage
While you could likely save some amount of money by trying to buy each card at its low point, this would be way too much work for the average Magic player (and also way too much work to calculate)