This Umbreon, in particular, has an interesting floodgate ability in Dark Gaze
Blue is even starting to get some impressive looking creatures which all ends up making blue a very strong colour in cube for all types of deck
Cards are typically numbered in a specific order within a set: Grass-type Pokemon Fire-type Pokemon Water-type Pokemon Lightning-type Pokemon Psychic-type Pokemon Fighting-type Pokemon Darkness-type Pokemon Metal-type Pokemon Dragon-type Pokemon Colorless-type Pokemon Trainer cards (Items, Tools, Supporters, Stadiums) Energy cards Secret Rares: Numbers Above the Set Count This is one of the most useful things the collector number tells you
The fact that Mend the Wilds is an instant makes this card a lot better, since you can cast it right before your turn and most likely get to draw whichever permanent you got back from your graveyard
Also changing: Pokemon Tool cards
Minun [Reverse Holo] #32 Pokemon Secret Wonders Keep track of your collection value over time