Your ancestry manifests in the form of several special abilities. You gain access to abilities similar to those of an archon.
Prerequisite: Sorcerer level 1st.
Benefit: You gain a bonus on saves against electricity and petrification equal to the number of celestial sorcerer feats you possess. You also add protection from evil to your list of 1st-level sorcerer spells known. This spell is in addition to the spells you gain normally based on your sorcerer level.
Source: Player’s Handbook II, page 90.