Machinist
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Where all artificers are proficient in firearms, machinists specialize in using their firearms in conjunction with magic to incredible effect. Machinists works tirelessly on the development of advanced armaments and new and devastating weapons to bring to the fray. Armed with their signature firearms and a repertoire of technological marvels, machinists deploy their auto-turrets to deal massive damage on the field.
Tool Proficiency¶
3rd-level Machinist feature
You gain proficiency with smith's tools. If you already have this proficiency, you gain proficiency with one other type of artisan's tools of your choice.
Machinist Spells¶
3rd-level Machinist feature
You always have certain spells prepared after you reach particular levels in this class, as shown in the Machinist Spells table. These spells count as artificer spells for you, but they don't count against the number of artificer spells you prepare.
Machinist Spells
| Artificer Level | Machinist Spells |
| 3rd | shield, thunderwave |
| 5th | scorching ray, shatter |
| 9th | fireball, wind wall |
| 13th | ice storm, wall of fire |
| 17th | cone of cold, wall of force |
Eldritch Cannon¶
3rd-level Machinist feature
You've learned how to create a magical auto-turret. Using smith's tools, you can take an action to magically create a Small or Tiny eldritch cannon in an unoccupied space on a horizontal surface within 5 feet of you. A Small eldritch cannon occupies its space, and a Tiny one can be held in one hand.
Once you create a cannon, you can't do so again until you finish a long rest or until you expend a spell slot to create one. You can have only one cannon at a time and can't create one while your cannon is present.
The cannon is a magical object. Regardless of size, the cannon has an AC of 18 and a number of hit points equal to five times your artificer level. It is immune to poison damage and psychic damage. If it is forced to make an ability check or a saving throw, treat all its ability scores as 10 (+0). If the mending spell is cast on it, it regains 2d6 hit points. It disappears if it is reduced to 0 hit points or after 1 hour. You can dismiss it early as an action.
When you create the cannon, you determine its appearance and whether it has legs. You also decide which type it is, choosing from the options on the Eldritch Cannons table. On each of your turns, you can take a bonus action to cause the cannon to activate if you are within 60 feet of it. As part of the same bonus action, you can direct the cannon to walk or climb up to 15 feet to an unoccupied space, provided it has legs.
Eldritch Cannon
| Cannon | Activation |
|---|---|
| Flamethrower | The cannon exhales fire in an adjacent 15-foot cone that you designate. Each creature in that area must make a Dexterity saving throw against your spell save DC, taking 2d8 fire damage on a failed save or half as much damage on a successful one. The fire ignites any flammable objects in the area that aren't being worn or carried. |
| Force Ballista | Make a ranged spell attack, originating from the cannon, at one creature or object within 120 feet of it. On a hit, the target takes 2d8 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 it a number of temporary hit points equal to 1d8 + your Intelligence modifier (minimum of +1). |
Arcane Firearm¶
5th-level Machinist feature
If you don't already have a firearm, you create one with your smith's tools. Your extensive knowledge of firearms allows you to juryrig any wand, staff, or rod into an arcane firearm, a conduit for your destructive spells. When you finish a long rest, you can use smith's tools to affix the proper equipment onto a wand, staff, or rod and thereby turn it into your arcane firearm. You only have enough in your kit for one modification at a time. If you modify a different item, the previous item falls apart. The modification otherwise last indefinitely.
You can use your arcane firearm as a spellcasting focus for your artificer spells. When you cast an artificer spell through the firearm, roll a d8, and you gain a bonus to one of the spell's damage rolls equal to the number rolled.ls. When you cast an artificer spell through the firearm, roll a d8, and you gain a bonus to one of the spell's damage rolls equal to the number rolled.
Explosive Cannon¶
9th-level Machinist feature
Every eldritch cannon you create is now more destructive:
- The cannon's damage rolls all increase by 1d8.
- As an action, you can command the cannon to detonate if you are within 60 feet of it. Doing so destroys the cannon and forces each creature within 20 feet of it to make a Dexterity saving throw against your spell save DC, taking 3d8 force damage on a failed save or half as much damage on a successful one.
Fortified Position¶
15th-level Machinist feature
You're a master at forming well-defended emplacements using your Eldritch Cannon:
- You and your allies have half cover while within 10 feet of a cannon you create with Eldritch Cannon, as a result of a shimmering field of magical protection that the cannon emits.
- You can now have two cannons at the same time. You can create two with the same action (but not the same spell slot), and you can activate both of them with the same bonus action. You determine whether the cannons are identical to each other or different. You can't create a third cannon while you have two.
Source: Tasha's Cauldron of Everything, p. 17