Sorcerer through the Orc or Draconic bloodline can add +1 per die rolled. As a Shocking Grasp Magus, I would love to get that. I could dip. Lets explore another (cheesy?) way.
Eldritch Heritage is a general feat granting a Bloodline Power, but not a Bloodline Arcana.
Select one sorcerer bloodline. [...] You gain the first-level bloodline power for the selected bloodline. [...] You do not gain any of the other bloodline abilities.
Bloodline Havoc is a Bloodline mutation that can replace a Bloodline power with this effect I am looking for:
Whenever you cast a bloodrager or sorcerer spell that deals damage, add 1 point of damage per die rolled. This benefit applies only to damaging spells that belong to schools you have selected with Spell Focus or that are bloodline spells for your bloodline.
This ability replaces the sorcerer's 1st-level bloodline power or the bloodrager's 4th-level bloodline power.
To use a bloodline mutation, do I need something else than a bloodline? If not, can I use Bloodline Havoc on Eldritch Heritage?
This question is related to How to get Sorcerer Bloodline Arcana?