Tempering, Fools or Arcane

I'm gearing up a low level blade of mercy character at the moment. I'm 40 vitality, 20 endurance, 14 skill, 12 strength.

I have three options for my BoM.

Cursed Fools Damp Blood Gem Cursed Arcane Damp Blood Gem Cursed Tempering Damp Blood Gem

Fools seems to have the highest max damage, but then I'll have to stay at full health at all times?