Plumber

The plumbing profession is somewhat more dangerous in fantasy worlds than others. Sewer monsters. Valve demons. Squeaky toilet mimics. Men who won't put the seat down. It requires a particular set of skills, and a pragmatic approach to wading in waste.

 

Tools of the Trade

3rd-level Armorer feature

You gain proficiency with heavy armor. You also gain proficiency with smith’s tools. If you already have this tool proficiency, you gain proficiency with one other type of artisan’s tools of your choice.

Plumber Spells

3rd-level Armorer feature

You always have certain spells prepared after you reach particular levels in this class, as shown in the Armorer Spells table. These spells count as artificer spells for you, but they don’t count against the number of artificer spells you prepare.

Armorer Spells

Artificer Level	Spell
3rd	create or destroy water, purify food and drink
5th	knock, arcane lock
9th	water walk, water breathing
13th	freedom of movement, control water
17th	maelstrom, transmute rock

Diving Suit

3rd-level Plumber feature

You learn to create protective gear suitable for hostile environments. As an action, you can turn a suit of heavy armor you are wearing into a magical Diving Suit, provided you have smith’s tools in hand.

You gain the following benefits while wearing this armor:

• If the armor normally has a Strength requirement, the Diving Suit lacks this requirement for you.
• You can use the arcane armor as a spell casting focus for your artificer spells.
• The armor is airtight and watertight, holding enough air for 10hrs of breathing. It can go underwater up to a depth of 900 feet. Below that it takes 2d6[/damage] bludgeoning damage per minute from pressure.
• You can doff or don the armor as an action.

The armor continues to be a Diving Suit until you use this feature again or you die.

Extra Attack

5th-level Armorer feature

You can attack twice, rather than once, whenever you take the Attack action on your turn.

Adaptations

9th-level Plumber feature

After working in the industry for a while you have learned how to modify your suit. Choose one of the following perks:

• The AC provided by your armor increase by your proficiency bonus
• You are resistant to a damage type of your choice whilst wearing your armor. At the end of a long rest you may change the chose damage type to a new type.
• You are immune to the effects of poor weather such as precipitation, ice or strong winds etc. 

Hermetic Sealing

14th-level Plumber feature

Your Diving Suit gains additional benefits, as shown below.

You can seal your armor entirely against intrusion for 1 minute. During this time, nothing-not physical objects, energy, or other spell effects-can pass through your armor, in or out, though you can still breathe there. Additionally, you are immune to all damage, and you can't be damaged by attacks or effects originating from outside your armor, but your speed is reduced to 0. This effect ends if you cast a spell or attack. You must finish a long rest before using this ability again.