Blood of the Master

Acquisition
Skill Quests: Skill Trainers: Signet of Capture:
 * The Hot Springs Murders (Nebo Terrace)
 * Sorim (Quarrel Falls)
 * Master Scout Kiera (Henge of Denravi)
 * Dakk (Ember Light Camp)
 * Mazzim {Fishermen's Haven}
 * Zhao Di {Shing Jea Monastery}
 * ... more to be added ...

WARNING
Due to the Factions and other Updates, Blood of the Master now heals all minions. If you have at least 4 Minion Masters, you can actually kill yourself using this skill.

Sacrifice works like so:

If you keep this progression up, 4 minion masters with 10 minions tied to them is a 100% sacrifice. This means that you will kill your character to heal all minions for whatever your level is in death magic (see the above chart for level to healing ratio).