Alright, so I have no clue at all what I am doing once rotation hits. I do understand Theros isn't out yet and there could be some really great cards in there that can change things quite easily. But I am just speculating.
My Gruul Aggro's losing some good cards(Hellrider, Stromkirk Noble]],
Flinthoof Boar
) and my monogreen loses a lot of elves. So I'm trying to figure out what to do to supplement these losses. Trying to see if I can just make one good G/R or Monogreen Ramp/Midrange deck.
Seeing as we lose Arbor Elf, Avacyn's Pilgrim and Elvish Archdruid I am pretty limited with mana dorks. I thought for a bit, and Dragon's Maze has Zhur-Taa Druid and M14 has Manaweft Sliver. Unfortunately they cost 2 mana to play, but I think it's worth a shot. The druid adds a small bit of pressure with the 1 extra damage for tapping and the manaweft helps/gets help from the other green slivers in the deck.
The thing about the Monogreen midrange that is so popular right now is that it's losing Craterhoof Behemoth after rotation. That card alone wins games in one blow. I am really hoping there is something similar in Theros Block. There is Worldspine Wurm but I cringe every time as I find him in my opening hand or within the first few draws without having Garruk, Caller of Beasts out.
Basically, you have some green slivers that work pretty well alone, and even better together. They add ramp, they add damage. The infamous Kalonian Hydra, though with not as much synergy with other cards as I had wanted, is still a huge threat that will win in two turns if unanswered. However, the Hydra, like most creatures is vulnerable to removal and more times than not, your opponent will want him gone fast. That's where Ogre Battledriver comes into play.
Domri Rade for card advantage and removal. Not to mention his Emblem is pretty much a won game.
Garruk, Caller of Beasts for major card advantage, free green creatures. Not sure if I want a 3 or 4 of. I want him out ASAP but don't want to draw copies when I have one going strong.
I really want a strong red creature like Thundermaw Hellkite to be in here. But not sure if there is anything out right now. Guess I have to wait for Theros.