Create a fun multiplayer deck, that can become a decent duel deck with only a few minor substitutions.
Aside: My Definition of a Fun Deck:
A deck that I enjoy playing, that others enjoy playing against (So keep the Stax under control, and focus more on creatures that are impossible to kill). I like synergies and combos, but not infinite combos. More cool little interactions and rules quirks than omfgmindlslaverlockrrr.
I enjoy decks with: Big Creatures and massive Token Swarms, fortunately, Green and Black both deliver.
I want to explore a deck with lots of Sac and Recur effects. Re-using my creatures as many times as needed to thwart the many board wipes prevalent in Commander games.
Lots of ETB and LTB effects, Sacrifice outlets, recursion, Reanimator effects to sneak fatties out early, etc.
Gameplan: Lock the board down with multiple grave pact effects, and other removal. Dump large creatures into the GY and reanimate to start chipping away at opponents health, or build up a large token army and overrun for the win. Overwhelming Stampede is rather nasty with a single Doomgape and a swarm of 1/1's.
So:
Others:
It is played. In a top-tier deck, no less.
Why would it be for Serum Visions? That's a bit like expecting Counsel of the Soratami...
It's quite a bit worse than Void Stalker.
And therein lies the problem with making big splashy mill cards. It is mathematically impossible to make a mill card that is good enough for standard but not completely unbeatable in limited.
WTB Spellbreaker Behemoth in Standard...
How's the weather in magical christmasland?
Uh, it is good. Very good, in fact. Infest would have been a sweet card on it's own, and the Scrylands should have demonstrated just how useful Scry 1 is on an already good card.
No, but they fit the same slot in the curve, a slot that is pretty lacking right now (aside from Domri)
No, it counts as 3 devotion for Phenax.
Pain Seer will never kill you...