Anyway, here is part of my handout from the Roll20 campaign I'm running. Thoughts on ways to improve it?
edt: Updated the text below for grammar and readability.
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CORIUM
HISTORY
Corium is a rare metal ore found deep within the mines under the dwarven stronghold of Ironfall in the Crater Mountains. Discovered by dwarves of the Ironring Clan, a long-isolated subsect of the Meromannian, Corium has unique properties that produce goods, weapons, and armor both beautiful and with increased functionality. The raw ore is easily identified by the peacock-blue, orange, and pink reflective hues.
The master smiths of Ironfall learned how to remove contaminants found within raw Corium ore through a process involving the excrement of the wyvern that nesting on the walls of the main crater/shaft near Ironfall. Once treated with the mildly acidic wyvern waste all contaminates and non-blue colors are leeched away. After being blended carefully with pure iron ore, the resulting bluish metal is light, durable, and can hold an edge longer than traditional iron-based weapons. To achieve its fullest potential, the ore must be worked by a master smith of great skill. In lesser hands, the ore can produce light, but fragile items that may shatter at the most inopportune time.
CRAFTING
Level three smith talent is required to successfully craft an item from Corium. Attempts by lesser skilled smiths will result in an item that once hit will immediately shatter like glass. Corium-based items cannot be reforged or reworked, although they can be repaired by a level 3 smith as described by the regular crafting/repair rules.
Depending on the number of crafting successes, a talent level 3 smith may select one or more properties from the list below. A smith may select a lesser result if they wish.
✥✥ 0 success: Light, but Fragile - The item weight is reduced. (See below) The item shatters the first time it takes gear damage. All crafting attempts without smith talent 3 and/or the wyvern ingredient produce 0 success regardless of the actual rolled dice.
✥✥ 1 success: Light Weight - Item's weight is reduced by one to a minimum of light. ex: Heavy reduces to normal, normal to light, light to light.
✥✥ 2 success: Holds an Edge - Bladed weapons damage can be increased by 1. This increases the base damage for the weapon.
✥✥ 3 success: Durability - Item gains an additional gear die.
✥✥ 4 success: Enhanced Durability - Items with two or more gear dice can ignore the first damage to a gear die on a pushed roll. Ex: A player pushes a roll while swinging a broadsword with the enhanced durability trait. S/He rolls with 2 base gear. The player gets 2 skulls on the pushed roll. S/He can ignore one of these skulls reducing the weapon's gear dice to 1. Damaged or fully repaired items with only one gear die do not benefit from this modification. Therefore even an Enhanced Durability item can be potentially broken.
✥✥ 5 success: Master Item - the smith can apply two characters from the list above to the item.
✥✥ 6+ success: Legendary Item - the smith can apply three characters from the list above to the item. The same characteristic may be selected twice. Ex: A heavy weapon can be reduced to "light" and be given one additional gear die.
These characteristics are in addition to any other talent-related bonuses the player may gain.
COST
Refined Corium costs 10 gold per unit. To produce an item, half of its metal material cost must comprise of corium and the other half has to be iron. One unit of fresh wyvern excrement is also required.
NPC smith produced items the item cost is equal to the normal cost plus the cost of the corium ore value. Masterwork and legendary items will increase the base cost by x5 or x10 accordingly.