[Saber Cherry]

Some blood combat spells are very potent. Not bleed, but the area-effect ones... like Agony. I've never used Blood Burst, but it looks pretty good too... but really, if Reinvigoration worked correctly, that alone would make Blood worthwhile in combat.

Outside of combat, if you happen to get a Blood-Nature mage, Crossbreeding is very useful. If you have a luck scale of neutral or better, it is worthwhile to empower a Druid in blood or a blood user in Nature just for crossbreeding.

And Lastly, I'm working on a blood mod to make the blood summons more balanced (especially the big ones). There needs to be another blood-1 summon in addition to Serpent Fiend...