Self Exsanguination (3.5e Feat)
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Self Exsanguination [General]
Add even more blood to your spells!
Prerequisite: Improved Blood Component
Benefit: When using your blood component ability, you may now sacrifice up to twice your Constitution modifier in hit points, gaining an increase in caster level as normal.
Normal: You may only raise your caster level to double your normal caster level when using your blood component ability.
Special: For every 5 hit points you sacrifice, you take 1 point of Constitution damage.