You can increase one ability score by 2 and one Ability Score by 1 up to a maximum of 20

Due to your mixed blood, you have a resistance to Fire and Radiant damage.

Due to your heritage, you have 60 ft. of Darkvision.

A Nephilim is a being between two bloodlines, as such those aspects often appear physically (e.g. horns, wings, fangs, scales etc.) and a Nephilim can choose to display one, both or neither bloodline's. These aspects can also manifest subconsciously, for example, a Nephilim who isn't as attuned to changing their physical form may often display more fiendish traits such as their horns if they feel extreme guilt, conversely, a Nephilim who feels particularly righteous may take a more celestial glow or appear to have a halo.

Nephilim have powers from both sides of their ancestry, however they only have enough energy to manifest one side's per rest. Once, after finishing a Long Rest, determine which bloodline you are attuned to, you gain abilities from that side. You can also speak, read and write Common, Celestial and Infernal