Selvala, Heart of the wilds (Infinite Green Mana) (EDH / Commander)

Make lots of mana and use Omnath to keep that mana through turns. Some protection in the form of a few hexproof/shroud enablers (this deck could probably use a couple more). Get damage through with some of the trample enablers.

Aluren is used to protect your mana too, allowing you to recast Omnath before the mana empties from your pool. Omnath is free to cast with Aluren, but you still have to pay the additional commander tax (which can be reduced by 1 with Emerald Medallion or Rhonas's monument).

Use all of your mana to win through commander damage, a million wolves from a kicked wolfbriar elemental or infinite damage from umbral mantle with Selvala, Heart of the Wilds, Elvish Aberration, or Karametra's Acolyte.

Can switch the archetypes pretty easily with this deck:
Go creature heavy with a Craterhoof behemoth and more creatures/tokens.
Go voltron-y with more equipment and protection for Omnath.
Become the bane of the table by building mono-green troll. Add choke and carpet of flowers for that special blue player in your life. Add some land destruction. Add City of Solitude. Use your vast mana for evil.