It should also be mentioned that one of the cards is getting a name change
[wp_ad_camp_1] Modern, unlike Standard, is a format defined somewhat by its hate cards, by which I mean cards that specifically target your opponent's strategy in attempt to lock them out of a win or at least delay them long enough for you to win
Given it's the Soul Stone it seems like you should have to exile a nontoken creature, but this really seems like a set nobody at WotC really cared about
It's not the strongest card in the game, but it can be useful, especially in a Dark-type deck
After all, Creativity is actually quite vulnerable to removal spells (especially Leyline Binding) that can tag a treasure token which is hard for many Aggro decks to accomplish
Sometimes you play a typal support card that doesn't actually have the appropriate type itself (see: Grave Titan in Zombie decks), but Maskwood Nexus fixes that and assures every creature you play fits into the overall gameplan