http://deckbox.org/sets/649301 - Deck featuring Taunting Elf and Venemous Breath.

http://deckbox.org/sets/649300 - Life Gain, Ageless Entity and Wurms at endgame.

http://deckbox.org/sets/649302 - Not satsifed with this as is, needs more work.

Mono green decks. Green/White would have to be second favored dual color deck. Each are well capable of gaining life and can hit pretty hard if you can manage to stave off the attackers.