Miner

The Miner is an artificer that excels at tunneling and excavation using a custom-made pick, and can also sense fine vibrations in the ground.

Tools of the Trade

3rd-level Miner feature
You gain proficiency with mason’s tools. If you already have this tool proficiency, you gain proficiency with one another type of artisan’s tools of your choice.

Miner Spells

3rd-level Miner feature
You always have certain spells prepared after you reach particular levels in this class, as shown in the Miner Spells table. These spells count as artificer spells for you, but they don't count against the number of artificer spells you prepare.

	Miner Spells
Artificer Level	Spell
3rd	earth tremor, thunderous smite
5th	darkness, Maximilian's earthen grasp
9th	erupting earth, meld into stone
13th	death ward, locate creature
17th	hold monster, passwall

Multipurpose Pickaxe

3rd-level Miner feature
You never leave for a job without your trusty pick. You gain a special magic item called the multipurpose pickaxe, which you are immediately attuned to. The pick is both a set of mason’s tools and a martial melee weapon which you are proficient in. It deals 1d8 piercing damage on a hit, or 1d10 piercing damage if held in two hands. While holding the pick, you gain the following benefits:

• You gain a burrow speed equal to half your movement speed. When using this speed, you leave minor disturbances on the surface above.
• You can use the pick as a spellcasting focus for your artificer spells. You can also cast the mold earth cantrip, which counts as an artificer spell for you and doesn’t count against the number of artificer cantrips you know.
• When you attack a grounded creature with the pick, you can force it to succeed on a Dexterity saving throw against your spell save DC or have it be restrained, as you partially bury its body beneath the ground. The creature, or another individual within 5 feet of it, can use an action to make a Strength (Athletics) check against your spell save DC to try and pull out the stuck creature.

At the end of a long rest, you can create a new multipurpose pickaxe by touching a miner’s pick or a war pick. If you already have a multipurpose pick from this feature, the first one immediately becomes a normal pick. The pick also turns back into a normal item when you die.

Extra Attack

5th-level Miner feature
You can attack twice, rather than once, whenever you take the Attack action on your turn.

Rumbling Tremors

9th-level Miner feature
You can sense disturbances through the ground. You gain tremorsense out to a range of 30 feet. In addition, you gain the following benefits while burrowing:

• If you cast a spell that requires you to choose a creature you can see within range, you don’t need to see the creature as long as it is standing on the surface you are under. You can also cast a spell that requires you to choose a point, as long as the point is no higher than 5 feet above the surface you are under. The target of the spell must be within range of your tremorsense when casting in this way. 
• If you make a weapon attack with the multipurpose pick, you have advantage on the attack roll. On a hit, the creature has disadvantage on its Dexterity saving throw against being restrained.

Tunnelling Excavator

15th-level Miner feature
You are a machine when tunneling underground. You gain the following benefits while holding the multipurpose pick:

• You can cast the wall of stone and move earth spells without expending a spell slot, without preparing the spell, and without material components, provided you use the pick as the spellcasting focus. Once you cast either spell with this feature, you can’t cast that spell with it again until you finish a long rest.
• When you use your burrow speed, you can move through solid rock as if it were difficult terrain. You can also choose to leave a tunnel in your wake that is wide enough for you to comfortably move about. This tunnel collapses after 1 minute, unless it is held up by adequate supporting structures.

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