While there are green tricks (Gaeas Might, and Colossal Growth) I saw them a lot less, and the beef of green creatures in the set generally makes them less necessary
Yawgmoth, Thran Physician Yawgmoth, Thran Physician is an amazing engine that needs some support
Six mana may be a lot, but artifact decks often have ways to create a lot of it pretty easily
Deathtouch is a very helpful keyword to have on a creature in the early game, and the ability to look at the top of your library and play lands and spells (with mana value 4 or greater) from the top of your library is pretty sweet
Planeswalkers like Saheeli, Sublime Artificer are particularly synergistic with Vadrok, Apex of Thunder, as they can create creatures that Vadrok can later mutate into, even if the planeswalker is removed