Sanguine Imitation
Beginning at 13th level, you can use the innate abilities of any creature's blood that you have taken for yourself. You drink a vial of blood collected from said creature as a bonus action to activate this ability. This is limited to abilities that are consumable (such as a Barbarian's Rage). It does not include any abilities granted from an external power, such as a god or a Patron. If this is attempted with blood of a non-humanoid or extra-planar creature, you must make a Constitution saving throw with a DC of their challenge rating + 5 (this might also be modified by the DM for certain creatures based on their particular poisonousness or alienating origins).