iMtG Server: Gathering

Monogreen Primordial Hydra 66 cards, 0 sideboard 20 {Forest} 20 lands 1 {Elderscale Wurm} 2 {Gatecreeper Vine} 4 {Arbor Elf} 3 {Borderland Ranger} 4 {Primordial Hydra} 3 {Scorned Villager} 2 {Mwonvuli Beast Tracker} 4 {Acidic Slime} 23 creatures 1 {Boundless Realms} 2 {Fungal Sprouting} 1 {Cobbled Wings} 2 {Sheltering Word} 3 {Revive} 2 {Aerial Predation} 2 {Elixir of Immortality} 4 {Fog} 2 {Lair Delve} 4 {Ranger's Path} 23 other spells Sideboard

Any changes?

For creature based mana ramp: You could try {Elvish Archdruid} rather than {Scorned Villager} as he will multiply off other elves ({Arbor Elf}) and copies of himself.
Another option is  {Axebane Guardian} as he will also see {Gatecreeper Vine} and copies of himself. 
Both can see lots of mana quite quickly.

Also I'm guessing you ment to make this in standard rather than casual?

{Primalcrux}!!!