Life Siphon

Description
For 12...23 seconds, target suffers Health degeneration of 1...3, and you gain Health regeneration of 1...3.

Acquisition
Skill Quests: Skill Trainers: Signet of Capture:
 * The Necromancer's Novice (The Catacombs - Pre-Searing)
 * The Stolen Artifact (Sardelac Sanitarium)
 * Sir Bertran (Ascalon City)
 * Dakk (Ember Light Camp)
 * Ignis Effigia (Perdition Rock)
 * ... more to be added ...

Note
This spell's positive effects stack with each other. Casting it on 3 different foes will result in 3 times the health regeneration for oneself. Blood magic at 4 gives a degen/regen of 2/2, and 12 blood magic is needed for degen/regen 3/3. It is believed 4/4 is impossible.