[Snake]

It should be changed to just reduce your Status Resistance by 25% and grant you a skill that lets you interact with the concept of an accursed bloodline, like for example:

Blood Sacrifice
3M, 15% Max HP.

Stab your hand, taking 15% of your maximum HP as protection-ignoring Pierce physical damage, gaining "Blood Weapon LV" equal to the damage taken.

Blood Weapon - Deal LV bonus Dark magic damage, and remove 1 beneficial status effect from the target. If the attack is a critical hit, you will also recover HP/FP equal to LV.