Artillerist

Infusions. The Artillerist has two items infused with magical properties: its chain shirt which provides a +1 bonus to its armor class (included), and its spellcasting focus which provides a +1 bonus to its spell attack rolls (included). If the artillerist dies, these magical properties end 3 days later.

Arcane Firearm. When The Artillierist cast a spell, roll a d8, and gain a bonus to one of the spell’s damage rolls equal to the number rolled.

Spellcasting. The Artillerist is a 5th level spellcaster. Its spellcasting ability is Intelligence (spell save DC 15, +9 to hit with spell attacks). The Artillerist has following Artificer spells prepared:
Cantrips (at will): fire bolt, shocking grasp
1st level (4 slots): expeditious retreat, faerie fire, false life, feather fall, shield, thunderwave.

2nd level (2 slots): scorching ray, shatter, blur, pyrotechnics

Tools. The Artillerist is proficient with thieves' tool, woodcarver's tools, tinker tools, and carpenter's tools.

Multiattack. The artillerist uses its Eldritch Cannon and casts a spell with a casting time of one action.

Eldritch Cannon. The artillerist's handheld cannon magically exhales fire in a 15-foot cone originating from the artillerist. Each creature within must make a DC 15 Dexterity saving throw, taking 9 (2d8) fire damage on a failure or half as much on a success.