Arbor Elf will be the mana dorks in the deck.
2x Utopia Sprawl in the place of 1 Forest and 1 Ranger's Guile, it will be great with Arbor Elf
Also, added to the sideboard 2x Leyline of Lifeforce against heavy counter decks (blue ones), 2x Leyline of Vitality against aggro decks (sometimes this one can be a little slow) and 2x Melira, Sylvok Outcast against infect.
The sidedeck numbers maybe change later on, still need other cards to complete it
Now, general idea after various playtests
This deck had great results. Sometimes the combo is quick and the game ends in T3~5, other times you have to control damage taken until draw Umbral Mantle (the new side will help in this case). Or it can just finish the game with a massive attack using 20+ creatures if you dont have Umbral Mantle in play or in your hand
I have a lot of difficulty against a vampire deck and a infect one. An UW control are really dificult to play, if my combo does not works I'm screwd. But my side will help in this cases
Some notes about non combo cards:
Garruk, Primal Hunter is nuts. He can enter play in T3 what is quick and 3 G devotion goes well with Karametra's Acolyte and Nykthos, Shrine to Nyx. The 3/3 beast token helps a lot to control the match and the -3 makes him the best to this deck, when used with Mistcutter Hydra or/and Giant Growth give you a full hand ready to be used. I did not used the -6, you dont need it. Basically, you will have a lot of mana and him makes sure that you can use it.
Mistcutter Hydra looks a little off in the deck, but with all mana around she can enter a big monster and make your opponent suffer. Haste ability is great to finish the game, even without Umbral Mantle.
Nykthos, Shrine to Nyx is a machine, period
thinking in change Hunter's Prowess for Predator's Strike, the draw is good, but I almost dont use it...
Now, the perfect hand that come 1 time: Umbral Mantle+Elvish Mystic+Viridian Joiner+Chorus of Might+Ranger's Guile and 2 Forest. The draws in turn 2 and 3 are a Forest and Giant Growth.
Turn 1 - Elvish Mystic
+
Forest
Turn 2 - Draws Giant Growth, plays Forest
+
Viridian Joiner
Turn 3 - draw a Forest, plays Giant Growth in Viridian Joiner, tap it, plays Umbral Mantle, tap the other elf and a forest to untap Viridian = infinite mana and power + Chorus of Might = gg
I could have used the forest in turn 3, also Ranger's Guile has not used, but is good have some protection ready to be used
