The job class equipment does add a creature type when equipped, which is a nice nod
The aristocrat strategy is based on the ability to sacrifice creatures, so any creatures that can sacrifice themselves are often more important than any other creatures in your strategy (aside from Blood Artist type effects, but green doesnt have that)
The New Cards The number one reason to play a green Eldrazi ramp deck in the first place, Ulamog, the Ceaseless Hunger is top dog of the set and looks to be stronger in many ways to its counterpart: Ulamog, the Infinite Gyre
However, its easy to see that the mono-colored Commander decks arent getting a huge amount of love, at least when it comes to the beasts that can lead them
The only drawback of the card is discarding another card from your hand, but the payoff is the ability to nab any two future Pokemon cards from your deck, aiding you massively no matter what your board state looks like
The Ur-Dragon is one of the most popular commanders in Magic: The Gathering