While the card itself is basically the same as its variants, there are a few differences
With an abundance of mana in your pool an easy feat when playing green Bristly Bill can double your counters over and over, turning even the weakest Creatures into oversized game-ending threats
Much like we felt the pressure in Kaladesh to finally make Vehicles, Mark wrote, it felt like Outlaws of Thunder Junction needed to be the place we finally cracked Mounts. Saddle shows up on the racing team of Quickbeasts in Aetherdrift which really put vehicles and mounts neck and neck, the result is lots more support for both
Its a little bit finicky for sure, but the deck can get enough lands in play with the same type that the March will be powerful both times you cast it
Trivia Like its pre-evolved form Meditite, Medicham is one of the few Pokmon whose official art depicts the female form
Grixis lacks many good routes to Land ramp, especially if we're not willing to commit to Urborg+Cabal Coffers, so it's imperative we find mana generation elsewhere