Artillerist Artificer

Warhammer. Melee Attack Roll: +3, reach 5 ft. Hit: 5 (1d8 + 3) Bludgeoning damage. (Mastery: Push)

Hand Crossbow. Ranged Attack Roll: +3, range 20/60 ft. Hit: 5 (1d6 + 3) Piercing damage. (Mastery: Vex)

Spellcasting. The Artificer can cast the following spells (spell save DC14):

2/Day Each: Shield and Thunderwave

Eldritch Cannon. Small or Tiny Object. As a Bonus Action, you order the cannon to use the Flamethrower, Force Ballista, or Protector option below; you can direct the cannon to move up to 15 feet before or after that option:

Stats: Armor Class: 16 Hit Points: 15 (casting Mending on the cannon restores 2d6 Hit Points to it.
Immunities: Poison, Psychic

Activate Cannon (Requires You to Be within 60 Feet of the Cannon). As a Bonus Action, you may order the cannon to use the Flamethrower, Force Ballista, or Protector option below; you can direct the cannon to move up to 15 feet before or after that option:

Flamethrower. The cannon blasts fire in a 15-foot Cone. Each creature in that area makes a Dexterity saving throw against your spell save DC, taking 4 (1d8) Fire damage on a failed save or half as much damage on a successful one. Flammable objects in the Cone that aren’t being worn or carried start burning.

Force Ballista. Make a ranged spell attack +4 to hit, originating from the cannon at one creature or object within 120 feet of it. On a hit, the target takes 4 (1d8) Force damage, and if the target is a creature, it is pushed up to 5 feet away from the cannon.

Protector. The cannon emits a burst of positive energy that grants itself and each creature of your choice within 10 feet of the cannon a number of Temporary Hit Points equal to 1d8+2.