Stonemason Artisan Specialization

Stonemasons lays claim to the secrets of stone.

Bonus Proficiencies

When you adopt this specialization at 3rd level, you gain proficiency with stonemason’s tools. If you already have this proficiency, you gain proficiency with one other type of artisan’s tools of your choice. You also add the Gaulau Engine, Earth, and Stone Material blueprints to your portfolio, and these additions do not count against your maximum number of blueprints owned. If you already have the engine or material in your portfolio, you learn another engine or material blueprint of your choice.

If you have a gaulau engine available, you can combine it with your stonemason’s tools as an action to create power tools. These power tools allow you to build creations at a much faster speed than would normally be possible by a single individual.

Advanced Stonemasonry

At 3rd level, when using stonemason’s power tools, you can reduce the time to create a stone structure from months to weeks (determined by dividing the total number of weeks required by 4), weeks to days, days to hours, hours to minutes, and minutes to rounds.

You can also create stone material from surrounding structures using your stonemason’s power tools, which give you advantage on the check. You can create the following sizes of stones.

Stone	Weight	Damage	Size
Brick	3 lb.	1d4	Tiny
Block	30 lb.	1d6	Small
Slab	300 lb.	1d8	Medium

Throwing a stone requires an action. Thrown stones are simple weapons with a range of 10/20 feet. On a direct hit, your stone inflicts bludgeoning damage equal to its size on the above table plus additional damage equal to your Intelligence modifier.

Secrets of the Stones

Also at 3rd level, whenever you make an Intelligence (History) check related to the origin of stonework, you are considered proficient in the History skill and add double your Proficiency bonus to the check, instead of your normal Proficiency bonus. If you already have the stonecunning feature, you have advantage on all Intelligence (History) checks.

Shattering Strike

Starting at 5th level, when you score a critical hit with a weapon attack against a construct, object, or structure made of stone, you gain a bonus to that weapon’s damage roll equal to your level in this class. Once on your turn, you can apply your deconstruct damage to one of your attacks that hits a stone construct or elemental creature made of earth.

If you destroy a Medium or larger creature using this feature, the area where it dies is considered difficult terrain. You can harvest that difficult terrain as raw materials.

Bricklaying

At 9th level, you know how to create walls out of rammed earth or scavenged stone. If you have stone slabs available and your stonemason’s power tools, you can create one 5 ft. square, 3″ thick panel each round. Each 5 ft. section has AC 17, a damage threshold of 8, and 35 hit points.

Alternately, you can create rammed earth from loose gravel or dirt. Using your stonemason’s power tools, you can create one 5 ft. square panel each round. Each 5 ft. section has AC 12 and 20 hit points.

If you create a span greater than 20 feet in length, you must halve the size of each panel to create supports. You can crudely shape the wall to create crenellations, battlements, and so on.

You know how to strike the wall at the right spot to cause it to collapse. Creatures within half the wall’s range in height must make a Dexterity saving throw. On a failure they take 1d8 bludgeoning damage per 5 ft. square collapsed, or half that on a successful save.

Cave-In

At 15th level, you can use your deconstruct damage to cause a collapse. A 5-foot section of regular stone has an AC of 17, a damage threshold of 8, and 35 hit points. You can make a DC 15 secrets of the stones or stonecunning check to determine a weakness in the stone. A 5-foot section of weakened stone has an AC of 12 and 20 hit points. By inflicting enough damage to destroy the stone section, you can cause a cave-in. The area collapses in a 35 foot radius, with the central 15 feet classified as the bury zone and an additional 10 feet classified as a slide zone.

Characters in the bury zone of a cave-in take 28 (8d6) points of bludgeoning damage, or half that amount if they make a Dexterity saving throw. They are subsequently buried. Characters in the slide zone take 10 (3d6) points of bludgeoning damage, or no damage at all if they make a Dexterity saving throw. Characters in the slide zone who fail their saves are buried.

Buried characters begin suffocating. A creature can hold its breath for a number of minutes equal to 1 + its Constitution modifier (minimum of 30 seconds). When a creature runs out of breath or is choking, it can survive for a number of rounds equal to its Constitution modifier (minimum of 1 round). At the start of its next turn, it drops to 0 hit points and is dying, and it can’t regain hit points or be stabilized until it can breathe again.

Characters who aren’t buried can dig out their friends. In 1 minute, using only her hands, a character can clear rocks and debris equal to five times her heavy load limit. The amount of loose stone that fills a 5-foot-by-5-foot area weighs one ton (2,000 pounds). Armed with an appropriate tool, such as a pick, crowbar, or shovel, a digger can clear loose stone twice as quickly as by hand. A buried character can free himself with a DC 20 Strength (Athletics) check.