Magic is in your blood, allowing you to cast spells no matter how furious you become.
If you have the greater bloodrage class feature, you also gain a +1 bonus to the save DCs of spells you cast while in a bloodrage.
Section 15: Copyright Notice
Pathfinder Player Companion: Advanced Class Origins © 2014, Paizo Inc.; Authors: Dennis Baker, Ross Byers, Tom Phillips, Stephen Radney-MacFarland, and Owen K.C. Stephens.