Sorcerous Origin - Cambion Born

The following two pages of rules are for playing a Sorcerer of demonic origin. The build is likely overpowered and as such I would greatly appreciate any feedback or impressions from playtesting. The list of infernal spells is large but does not add to the number of spells cast only the number than can be picked from. The Demonic Essence ability is “wordy” but ultimately only does a couple things and only in specific situations. I was hoping to prevent any misinterpretations. Please enjoy, and any support is greatly appreciated as always.