Essence of the Mad Doctor
Perfect memory with infinite storage.
Beyond genius level intellect in the associated fields.
Can make potions that can do almost anything, from immortality, to regeneration or even cause someone to fall in love with a specific target.
Immunity to disease and poison mundane and magical.
Immense knowledge on occult and alchemical lore that updates itself should you find a way to travel to different worlds.
Supernaturally skilled at medicine, can cure just about anything with some research, already know how to tackle most ailments.
Master of life and biology, able to create homunculi that are superior to regular versions of their species in all areas including being ageless and perfectly loyal to you.
You may also create other creatures like sewn together Frankenstein abominations, chimera, or other mutated beasts.
Can conjure ingredients from thin air.