You can dabble as a bloodrager from a sorcerer, but let’s build on that a bit.

Improved Raging Blood

You strengthen the rage in your soul, fueling the fire in your heart.

Prerequisite: Raging Blood, 8th level

Benefit: You gain a 4th level bloodline power from the same bloodline as the one you selected when you took Raging Blood.  Increase the number of rounds you can be in a bloodrage by 2, and the bloodrage you can enter is exactly the same as a normal Bloodrager with all the same penalties and bonuses provided by the bloodrage ability.

Thoughts?