Several other variants of this Umbreon VMAX do exist, with the cheapest one selling for an average of around $5.50 , so if you do want to actually play with one of these, its best to go for that one, and not the one that could net you close to $1000 if its in good condition
In a one-on-one setting, this land is unfortunately not the greatest, as the fewer players there are, the more limited you are to what mana you can tap for, but it is handy in other formats
Since most competitive decks were playing four copies each of Professor Oak (Professors Research without the Supporter limitation) and Bill (draw two cards), players were going through their decks at extremely accelerated rates
Its my understanding that Tayam, Luminous Enigma has a cEDH pedigree, but its still a cool recursive engine for us common folk
You can learn more about those in our All Trainer Gallery Pokemon Cards article