Material Substances (Jujutsu Kaisen Supplement)

Materials

In the world of craftsmanship, engineering, and architecture, the range of materials available forms the cornerstone of innovation and progress. From age-old natural resources to refined and processed metals, each material holds unique properties that make it indispensable across various industries and artistic endeavors.

Material	Material Description	Material Rarity	Material Property
1. (Clay)	Clay is a malleable material that can be shaped and hardened through firing. It is commonly used for pottery, bricks, and basic building structures. Once hardened, it offers good resilience but can crack under extreme pressure.	Common	Moldable Form. Can be reshaped with water and time, making it ideal for temporary repairs or creative solutions.
2. (Wood)	A sturdy and flexible material, wood is commonly used for simple structures and basic tools. Though not as durable as stone or metal, it is lightweight and easy to work with, providing decent resilience against impact and mild weather conditions.	Common	Lightweight Structure. Grants a +1 bonus to carrying capacity for wooden equipment due to its reduced weight.
3. (Glass)	Glass is a fragile and transparent material often used for decorative items and windows. While it can be sharp when broken, it lacks the durability needed for practical tools or construction.	Common	Sharp Shards. When broken, glass can be used as an improvised weapon dealing 1d4 piercing damage.
4. (Lead)	Lead is a dense, malleable metal known for its use in protective barriers and as weights. Its heaviness makes it useful for counterweights and shielding, but its toxicity limits its applications.	Uncommon	Radiant Shielding. Provides resistance to radiant damage when used as part of armor or shields.
5. (Stone)	Stone is a naturally occurring material known for its durability and strength. It is often used for constructing walls, fortifications, and basic tools. Stone can withstand considerable pressure, making it ideal for defensive structures but is heavier and less flexible.	Common	Solid Foundation. Grants a +1 bonus to AC for stone-based structures due to its solid build.
6. (Copper)	Copper is a reddish-brown metal known for its excellent conductivity and malleability. It is used in electrical wiring, plumbing, and creating bronze when combined with tin. While not as strong as iron, it is easier to work with and highly versatile.	Common	Conductive Touch. Can channel lightning damage, adding 1d4 lightning damage to touch-based spells or attacks.
7. (Marble)	Marble is a metamorphic rock known for its beauty and elegance. It is used in sculpting and high-end architecture. Although not as strong as granite, its aesthetic appeal makes it highly sought after for decorative purposes.	Uncommon	Polished Resilience. Grants advantage on saving throws against being knocked prone when standing on marble surfaces due to its smooth, stable base.
8. (Bronze)	Bronze is an alloy made from copper and tin, known for its durability and resistance to acid damage. It was historically used for crafting weapons, tools, and sculptures, offering a good balance between hardness and workability.	Uncommon	Acid Resistance. Provides resistance to acid damage, making it ideal for equipment exposed to corrosive environments.
9. (Iron)	Iron is a strong metal that is relatively easy to mine and forge. It is used to create a variety of items, from weapons and armor to everyday tools. While it can rust when exposed to moisture, its strength makes it a staple in many industrial and military applications.	Common	Reinforced Strength. Grants a +1 bonus to damage rolls when used in weapons, reflecting its reliability.
10. (Silver)	Silver is a precious metal with good conductivity and a beautiful sheen. It is used for making currency, jewelry, and in some cases, weaponry against supernatural creatures due to its mystical properties.	Uncommon	Supernatural Bane. Deals an additional 1d6 radiant damage to undead and shapechangers, capitalizing on its mystical properties.
11. (Granite)	Granite is a very hard and durable stone, commonly used in construction and as a material for monuments and countertops. It is resistant to abrasion and can withstand extreme weather, making it a long-lasting building material.	Uncommon	Immovable Bulk. Reduces forced movement by 5 feet when standing on granite due to its sheer mass.
12. (Obsidian)	Obsidian is a volcanic glass that is sharp and brittle. It has historically been used for cutting tools and weaponry due to its razor-sharp edges. However, it can break easily and requires careful handling.	Rare	Razor Edge. Weapons made of obsidian deal an additional 1d4 slashing damage on a critical hit due to their keen sharpness.
13. (Steel)	Steel is an alloy made by combining iron and carbon, resulting in a stronger and more resilient material. It is commonly used for high-quality tools, weapons, and construction elements due to its superior strength and durability compared to iron.	Uncommon	Tempered Defense. Grants a +1 bonus to AC when used in armor, showcasing its reliable protective qualities.
14. (Gold)	Gold is a soft, malleable, and highly valuable metal often used for ornamental and ceremonial purposes. While too soft for practical tools or weapons, its rarity and luster make it a symbol of wealth and prestige.	Rare	Wealth's Allure. Provides a +2 bonus to Persuasion checks when prominently displayed due to its prestige.
15. (Quartz)	Quartz is a crystalline mineral known for its beauty and piezoelectric properties. It is used in timekeeping devices, jewelry, and as a decorative stone. While not strong enough for construction, its clarity and hardness make it valuable.	Rare	Crystal Clarity. Grants advantage on Wisdom (Insight) checks when focusing through or holding quartz, enhancing perception.
16. (Ebony)	Ebony is a dense, dark wood known for its fine texture and smooth finish. It is used for luxury furniture, musical instruments, and ornamental pieces due to its rarity and deep black color.	Rare	Mystic Resonance. Grants a +1 bonus to cursed energy attack rolls when ebony is used as a material.
17. (Titanium)	Titanium is a lightweight, strong metal resistant to acid damage. It is used in aerospace engineering, medical implants, and high-end tools due to its superior strength-to-weight ratio.	Very Rare	Unyielding Lightness. Grants resistance to non-magical bludgeoning damage when used in armor due to its high strength and lightness.
18. (Platinum)	Platinum is a dense and highly valuable metal often used for high-end jewelry and industrial applications. Its high melting point and resistance to tarnish make it ideal for long-lasting, high-stress uses.	Very Rare	Enduring Shine. Grants immunity to acid damage, ensuring pristine condition.
19. (Mithril)	A rare, lightweight metal known for its incredible strength and silvery sheen. Mithril is prized for making armor that provides superior protection without the burden of added weight.	Very Rare	Weightless Defense. The disadvantage on Stealth checks from wearing armor is ignored, allowing silent movement.
20. (Adamantine)	Adamantine is an extraordinarily tough material often used for crafting indestructible weapons and armor. It is nearly impossible to break and can withstand even the most brutal of impacts.	Legendary	Indestructible Force. Critical hits against the wearer of armor made of adamantine are negated, providing exceptional defense.

The DM may change the rarity and properties of the materials depending on the campaign setting. Additionally, you may work with your DM to add new materials to this list, attaching the proper rarity and property of the material used.