Alchemist

The alchemist is to the wizard as the blacksmith is to the fighter. Closely related disciplines that nonetheless require so much specialized knowledge it’s functionally impossible to be a master at both. Alchemists are primarily useful for brewing potions, but many are also lorecrafty and well versed in obscure uses for various materials. 
Yes, an alarm spell requires a bell, but do you know what happens if you use a crystal bell crafted by an elf maiden? I don’t, but your alchemist might! Many wizards began life as alchemists in service to a lord. Eventually frustrated by the limits of what alchemy can do, they set out to learn proper magic!
THE LABORATORY: The laboratory allows your alchemist to craft potions 10% cheaper and faster than normal per level of the laboratory. The alchemist is not a wizard or sorcerer but understands the principles of magic well enough to duplicate their effects while making potions. The kinds of potions your alchemist can make depend on the monster organs you bring them!
THE EYES OF THE BEAST: POTION OF INVISIBILITY TO MONSTERS (UNCOMMON) With the preserved eyes of a creature your alchemist can make a lesser form of the potion of invisibility. This is an uncommon potion requiring a spellcaster of at least 3rd level. The potion takes just as long to craft and costs just as much as a potion of invisibility (reduced by the alchemist’s crafting bonus), but it only grants invisibility against exactly the kind of creature the eyes were harvested from. A black dragon’s eyes make potions of invisibility to black dragons. Not all dragons or even all evil dragons. A potion of invisibility to goblins will not work against bugbears or hobgoblins, and a potion of invisibility to lizardfolk will not work against troglodytes. Unless, of course, you are a generous GM.
THE BRAIN OF THE BEAST: POTION OF MONSTER CONTROL (VERY RARE) If the rarest and hardest of all organs to harvest and preserve—the brain—is brought to an alchemist, they can craft the very rare potion of monster control. This powerful item distills the magics of the spell dominate monster into a potion anyone can drink. Crafting this item requires the services of a 7th-level spellcaster. Consuming the potion acts just like casting the spell, but it only works against the kind of creature whose brain was used to make the potion. Also, the target does not gain advantage if you are fighting it, and its duration is 1 hour.