Hostile Desert
Oracle Text
: Add .
, Exile a land card from your graveyard: Hostile Desert becomes a 3/4 Elemental creature until end of turn. It's still a land.
Card Rulings
4/18/2017 Desert is a land subtype with no special meaning. It doesn’t grant the land an intrinsic mana ability. Other cards may care about which lands are Deserts.
7/14/2017 If Hostile Desert becomes a creature the same turn it enters the battlefield, you can’t attack with it or tap it for mana.
But unlike all colour man lands who, to my knowledge, enter the battlefield tapped, these colourless ones enter untapped. Mutavault will still be chosen over this in decks that care for creature types, like Merfolk, but it's nice to have an alternative for if the creature type doesn't matter.
Yeah Modern seems like the place, but lists that could use this because they have a lot of fetches also generally run lots of colors. Colorless manlands aren't very good in those sort of lists.
Kinda wants to be played in a deck that isn't vulnerable to gravehate or doesn't use generic gravehate itself.