MTG Salvation

Any suggestions would be appreciated,

1 Planes Walker
Garruk Relentless

1 Artifact
Loxodon Warhammer

15 Sorcery
3 Overwhelming Stampede
4 Cultivate
4 Kodama's Reach
4 Prey Upon

23 Creatures
4 Arbor Elf
1 Ulvenwald Tracker
4 Skinshifter
4 Strangleroot Geist
1 Primordial Hydra
1 Vigor
2 Kalonian Twingrove
3 Hornet Queen
3 Pelakka Wurm

20 Land
20 Forests

What format is this for? Looks fine for casual..is it supposed to be a Duel Deck impersonator? More land might be a good idea since you are all-in on a ramp strategy