Not only can we support different worlds, we can also support different themes
Reliquary Tower taps for one Colorless mana, as do a lot of Lands on this list, but the effect it has is nothing to do with mana at all
Gems are used to buy entry to special game modes, cosmetics, and card packs
The spinning flyer functions as a mini frisbee with Pokmon wings to help it soar in the air
Massacre Girl, Known Killer I'm a big fan of the trickery allowed by wither in combat and Massacre Girl, Known Killer gets at least two creatures to distribute -1/-1 counters to and it's quite deadly
Dauntless Scrapbot Released during the summer, right after the massive Final Fantasy hangover and only given a little over a month to shine before Spider-Man, Edge of Eternities was criminally robbed of the attention it deserved