Vampiric Assault

Acquisition
Skill trainers
 * Eye of the North
 * Micah Fergson (Eye of the North)
 * Sida (Gunnar's Hold)
 * Ybbob (Rata Sum)

Note

 * This is the only Assassin skill that steals health.
 * Synergizes well with Nightmare Weapon to cause a large life stealing spike on your target.
 * In addition to the life stealing this attack also does damage from the daggers striking.
 * Since this is a dual attack and it strikes twice this attack steals double the health than what's indicated in the skill description.