Curse your opponents while killing them. Then kill them. Enhance your blade with magic and luck. Gives a wide variety of small stat bonuses with some penalties, but if you can master the skill, say goodbye to the penalties! Add special magic effects to your sword that go off on attacks and buff yourself for a higher hit and critical rate. Warrior skill. (If there's any interest, I can easily adapt this to an "Elemental Arrow" skill tree that is virtually the same thing except for crossbows. Leave a comment to let me know if it would be worthwhile!) Full list of skills below: Level 1: Buff yourself for an increased hit and critical rate. Level 2: Drain mana on hit, with some stat bonuses to magical defenses. Level 3: Deal ice damage on hit. Level 4: Deal electrical damage on hit and disable traps more efficiently. Level 5: Deal fire damage on hit Level 6: Unlock a special skill with 100 percent accuracy and critical. Procs all on hit effects, and passively removes all penalties.
Go here http://community.gaslampgames.com/threads/skill-elemental-arrow.3615/ for the Elemental Arrow skill - Hexblade adapated to be a crossbow skill