[RDespair]

Here's some suggestions on skill changes:

Spirit

Spirit Ward, Spirit Bane, Circle of Power - Modified so that they affect Magical & Demon in addition to Undead.
Life Drain, Cascade - Add Bleeding Damage

Nature

Briar Ward - Reduced Cooldown time
Stinging Nettle - Increase Poison Retaliation
Sylvan Nymph - Increase Pierce Damage

Rogue

Lucky Hit - Chance increased to 50%
Anatomy - Add -% Resistance to weapon (% based, not flat)
Open Wound - Chance increased to 100%
Disarm Traps - Add +% Move Speed
Nightshade, Toxin Distillation, Mandrake - Add some flat poison damage (like around 10/5sec at LV1, 50/5sec at max)
Poison Gas Bomb - Reduce Cooldown time to 6 seconds to coincide with Volcanic Orb, Increase Poison Damage

Hunting

Gouge - Chance increase to 100%, Bleeding Damage reduced (so as to not make it better than Open Wound)

Storm

Storm Nimbus - Damage increased slightly

Earth

Heat Shield, Molten Rock - Retaliaton damage increased
Soften Metal - Add Fire Damage equal to current Physical Damage
Volatility - Add 33% Chance of +% Physical Damage
Flame Surge - Increase Fire Damage & reduce Energy Cost
Conflagration - Increase Burn Damage

Defense

No change

Warfare

Crushing Blow - Increase chance to 50%
Counter Attack - Increase chance & damage

Dream

Dream Stealer - Remove physical damage bonus

As you can see, I aimed to improve skills rather than nerfing them. The only exception was Dream Stealer - as it stands now, it's way overpowered, dealing a ton of damage at a very low level, hitting multiple enemies, and having a host of useful side effects. Even with the flat damage boost removed, it'll still be plenty powerful so I don't feel bad about nerfing it.

Rogue was probably the biggest boosted since it generally seems to be considered the weakest mastery. I added a +% Move bonus to Disarm Traps & -% Resistance to Anatomy since the Rogue mastery felt weird not having those 2 very-Rogue like abilities. I also gave some boosts to Poison & Bleeding (honestly, why does Open Wounds only have a small chance to work when Envenom Weapon, a lower level skill, does more damage and works with every hit?).