Blood Magic

3e Blood Magic 25 October 2002
and was pulled into the more general Sacrificial MagicGURPS Fantasy 167
168 describes a "blood pool" which can:
:"can store as much life energy as he can take before his victim dies"
*"concentrate for 10 seconds per HP healed"
This refers to page 112 which includes the "Vampire Mage" who has the feature Magic powered by blood pool rather than FP
GURPS Thaumatology: Magical Styles 24 also has a perk for this. It is entirely different and refers to using the Sacrifice of Self rules, getting skill bonuses for a % of HP instead of energy for a static amount. (this used to be skill for static in 3e but was changed)
Given that Thaumatology has rules for getting skill in exchange for energy though, that's not very useful for high-HP guys who might be better off just spending the fixed HP as energy to get a skill bonus, instead of a %.
==see also==
*Magic powered by blood pool rather than FP
==References==
Category:Rules
Category:Perks