Baythor

Potion engineering. After a long rest Baythor can decide to do one of 5 options. Make 5 common potions, 4 uncommon potions, 3 rare potions, 2 very rare potions or 1 legendary potion. When he takes a long rest all potions left over are removed.

Potion manufacturing. Baythor can make any potion if he has the materials to make said potions. (DM's decision on what the materials are, where to find them, and how to gain them.)   

Baythor must have access to alchemist's tools. It takes a full day to make the potions. Baythor makes a charisma check to make a potion. (Check description for DC's)

Each rarity has it's own DC, For every number above the DC that is how many potions Baythor receives. For example, if the DC is 16 and he rolled a 18. 18-16=2. Baythor recieves 2 potions.

Spellcasting. Baythor is a 3rd-level spellcaster. Its spellcasting ability is charisma (spell save DC 17, +4 to hit with spell attacks). Bayrhor has following Artificer/Alchemist spells prepared:
Cantrips (at will): acid splash, ray of frost, light, Purify food, fire bolt, Guidance, Shocking grasp
1st level (4 slots): Tasha's Caustic Brew, Fearie fire, Identify, Absorb Elements

2nd level (2 slots): Pyrotechnics, Blur

Color changing dagger. Melee Weapon Attack: +1 to hit, reach 5 ft., 2 target. Hit: 3 (1d4 + 1) piercing damage, + 1d4+2 of weapons current color.

Color changing dagger. The dagger changes color and can be controlled by the user. As a bonus action you can change the color of the dagger changing the damage type.

Red. Fire damage.

Blue. Cold damage

Sky Blue. Thunder damage

Yellow. Lightning damage

Purple. Psychic damage.

Black. Necrotic damage.

Green. Poison damage.

Dark Green. Acid damage.

Gold. Radiant damage.

Spare attack. Baythor can make another melee weapon attack as a bonus action.

Lover's defense. Once per day Baythor can cast the shield spell on the person Baythor is romantically in love with as long as they are within 15ft of them.