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.