Just won my local 4-round weekly event with this list:
// Lands
2 [TSP]
Vesuva4 [SOM]
Glimmerpost4 [MR]
Cloudpost1 [WWK]
Eye of Ugin1 [LG]
Karakas1 [LRW]
Island (1)4 [R]
Tropical Island4 [ZEN]
Misty Rainforest1 [ZEN]
Forest (4)1 [IA]
Glacial Chasm1 [WWK]
Bojuka Bog1 [WWK]
Khalni Garden// Creatures
4 [M12]
Primeval Titan1 [ROE]
Ulamog, the Infinite Gyre3 [MBS]
Phyrexian Revoker1 [ROE]
Emrakul, the Aeons Torn// Spells
4 [CHK]
Sensei's Divining Top3 [UL]
Crop Rotation4 [5E]
Brainstorm4 [GP]
Repeal4 [ZEN]
Expedition Map3 [US]
Show and Tell2 [AQ]
Candelabra of Tawnos2 [M10]
Ponder// Sideboard
SB: 1 [MBS]
Phyrexian RevokerSB: 3 [THS]
Swan SongSB: 2 [R]
Blue Elemental BlastSB: 3 [M11]
Obstinate BalothSB: 2 [M10]
Pithing NeedleSB: 2 [FBP]
Surgical ExtractionSB: 2 [NPH]
Beast Within
Seemed very solid all around. The real wiggle room is the Maindeck 4th Revoker, 4th Crop rotation, 2nd Candelabra, and 2nd Ponder. If your meta is RuG infused, I suggest a 4th Show & tell, Storm, a 4th revoker, reanimator a 4th Crop Rotate, Holistically even in spread, a 2nd Candelabra.
Khalni Garden was amazing in all my matches. Blocked a bob to save my life and win the game. Used it to repeal/draw for 1 blue. Blocked 2 dmg versus DnT. Had to be Bolt'd for a Liliana to kill a Titan, which resulted in me living at 3 life at the end of the game. Went fog-crazy versus Mud against Wurmcoils and Lodestones via Vesuvas to stall me into a win.