Heres a Jund deck that is essentially an evolution of Mardu Green: Creatures (14) 1 Dragonlord Atarka 1 Den Protector 1 Kalitas, Traitor of Ghet 3 Goblin Dark-Dwellers 4 Sylvan Advocate 4 Deathcap Cultivator Planeswalkers (4) Lands (25) Spells (16) The ability for the combination of Oath of Nissa and Traverse to make a deck operate smoothly might be put to the test here, but there are, again, a lot of subtle interactions in place in this Jund deck
You gotta have access to this effect in UG
In the Commander variant, a double-faced card's color identity is determined by the mana costs and mana symbols in the rules text of both faces combined
Mnchnerstr
Clearly Elemental tribal will be a thing, and the first card to include is Risen Reef, also from the new set, kind of Coiling Oracle on steroids
Its a creature tutor to start with, and a way to sculpt your hand, but it gets silly if you make use of your graveyard or discarding creatures