A casual deck based on abusing Arbor Elf with land enchantments such as Utopia Sprawl to produce absurd amounts of mana.
For an example of combo potential, consider the following turn sequence:
Turn 1: Forest, Arbor Elf
Turn 2: Forest, Utopia Sprawl or Wild Growth on the untapped forest, tap the untapped Forest for 2 mana, untag it with Arbor Elf, tap it for two more mana, cast Garruk Wildspeaker. Untap both lands, cast Overgrowth on the already-enchanted forest.
Turn 3:On the board are three Forests, one of which taps for four mana, and the capability to untap it twice as well as one other land. There is a total of 15 mana available to cast Worldspine Wurm, Gelatinous Genesis for seven 7/7 oozes, or Genesis Wave for 12 (very able to snag a Worldspine Wurm.
Sure, that situation is improbable. But consider this one:
Turn 1:Forest, Arbor Elf
Turn 2:Wirewood Lodge, Tap the Forest to put a Utopia Sprawl or Wild Growth on itself, untap it with Arbor Elf. Tap the forest for 2, use one to untap Arbor Elf with the Lodge, and the other to put another Utopia Sprawl or Wild Growth on the Forest. Untap the forest with Arbor Elf, tap it for 3 and cast Overgrowth on the forest.
Turn 3: The forest now taps for 6, and can be untapped twice with Arbor Elf and Wirewood Lodge, for a total of 17 mana (because it costs 1 to activate the lodge). This can cast Worldspine Wurm easily, or it can make eight 8/8 oozes, or Genesis Wave for 14.
My point is, there are lots of different paths for this deck to get ridiculous fast. Arbor Elf is definetly the key card for fast shenanigans, but the other untappers give it some slightly slower redundancy.
Oh, and I am aware the sideboard is incomplete, because I really was just thinking that guarding against land destruction was a needed task. Feel free to make SB suggestions.
