Angelic Fury

Fallen Aasimar Feat.

Though you've strayed from your ordained path, in moments of extreme stress you can channel the divine energy in your blood to enhance a specific facet of your fighting ability, to the detriment of the others. This ability is available to you as a bonus action once you fall below half your total hit point max.

Angelic Focus

Your fervent focus grants you the choice to go all in on one type of attack. This grants you advantage on attacks of that type, +2 on the damage done, and disadvantage on attacks of that kind against you (or disadvantage on saving throws against spells if you pick spells to focus on). Your focus also makes you vulnerable to attacks from the other types of attacks, granting your opponents advantage on attacks of the other kinds. 

Last Ditch Defense

Your AC goes up by half your wisdom or constitution modifier (player's choice) rounded down.