Best Variant Casting for Blood Magic?

[tedcahill2]

Any good variants for blood magic, that is using blood to cast spells instead of managing spell slots.

I'm toying with an idea that would have the mage roll a d20+spell level each time they cast a spell. If the resulting roll is equal to or greater than their constitution score, they take 2 points of constitution damage (which cannot be prevented and can only be healed naturally).

[Reprimand]

Any good variants for blood magic, that is using blood to cast spells instead of managing spell slots.

I'm toying with an idea that would have the mage roll a d20+spell level each time they cast a spell. If the resulting roll is equal to or greater than their constitution score, they take 2 points of constitution damage (which cannot be prevented and can only be healed naturally).

I recommend looking up a 3rd edition book called Bow & Blade there are some very metamagic reducing themed blood magic meta magic feats I highly recommend.

Blood Magic
Greater Blood Magic
Lesser Metamagic Blooding
Greater Metamagic Blooding
Superior Metamagic Blooding