A four mana tempo swing of this magnitude is right up my street
Enigmatic Terra Terra, Magical Adept seems like a great addition to Enigmatic Incarnation decks in Pioneer, and MTGO user SirEPIC capitalized
Again, only these three starter decks are available and thats as of the time of publication
Having access to red offers some versatility with instants like Naya Charm and Chaos Warp, which can help supplement the limited removal that green offers
These are still killer lands in Commander, though, and buying any playable Masterpiece land for under $40 is a deal at this point
I like Unnatural Selection in this deck for the ability to turn another players creatures into Slivers, either as a combo with Sliver Overlord or, if you need to help one player take down another player, by letting his creatures take advantage of sharing the pile of Slivers abilities