Ive excluded [casthaven]Gemstone Caverns[/casthaven] (which essentially lets you turn being on the draw to being on the play), [casthaven]Urborg, Tomb of Yawgmoth[/casthaven], and [casthaven]Vesuva[/casthaven] since they dont produce multiple mana (but can when combined with lands on this list)
Obviously, the more possibilities for triggers, the more powerful
A well-preserved card, especially if certified by a grading company, can represent a valuable addition to any collection, reflecting the history and timeless value of vintage Pokmon cards.
Another benefit of grading is protection, as most companies will send the Pokmon card back in a sealed slab of plastic
Y'shtola's abilities as a Commander aren't anything to laugh at either, even if they don't have as much massive combo potential as some of the other options in the set