A strategy which is strong against one type of player may be weak against another, and you just have to hope your tactics and build are enough to win you the day
Additionally, Water Shuriken is a stackable ability, if the player has two Greninja on the field, they can distribute up to 40 damage per turn
I think this pairs best with partner commanders that either add card advantage (Tymna the Weaver) or access to colors with ramp (Jeska, Thrice Reborn or Reyhan, Last of the Abzan)
Blood Moons out to make it a nightmare for your opponents running multiple nonbasic lands by turning them all into mountains
Of those, his minus abilities pack a punch, considering you can use his -3 ability as soon as he is summoned
Im looking forward to slotting Bighorner Rancher right into my Grothama, All-Devouring deck because tapping this for ten green mana sounds amazing