Rewrite the rule Materials as follows

The following is a list of materials that a Tile can be made out of. Presented in the form “{character}: {name}. {rarity}. ‘’{description}’’ ” where {character} is the letter used for the material in a Tile, {name} is the longform name of the material. {rarity} is the rarity of the material (either Common, Uncommon, or Scarce) and {description} is flavor text. A Tile may be described by its Material as in a “Glass Tile”.

*s: Stone. Common. “simple stones collected from the local river beds”
*f: Fine Sand. Uncommon. “colored sand imported from merchant ships or collected on the beach.”
*p: Paint. Uncommon. ‘‘locally crafted paint that the monks make from the surrounding area.’‘
*w: Wood. Uncommon. ‘‘stained wood from the nearby forest.’‘
*g: Glass. Uncommon. ‘‘see through or opaque, this stained glass is beautiful but requires a chain of processes to craft properly.’‘
*i: Ink. Scarce. ‘‘created from various materials, usually charcoal is the easiest to make while colors other than black are harder to create.’‘
*m: Precious Metal. Scarce. ‘‘Metals that are traded or smelted locally. Commonly the ones used in jewelry are used.’‘
*j: Jewel. Scarce. ‘‘Rare minerals that are found or traded for. Cut with specific tools by the monks, opals, jade, diamond, agate and emeralds among others are used in the mosaic.’‘

Each Material has a Stockpile which is a non-negative integer and is tracked in the “Mosaic” wiki page. By default, the stockpile of Common resources is 1000, Uncommon Resources is 5 and Scare Resources is 0.

Add the following to the list of Turn Actions

* Reduce the Stockpile of a material by one. Pick a stone tile and set its material to that material.
* Increase the stockpile of an uncommon resource by 5
* Spend up to 10 Guilders. Increase the stockpile of a scare resource by half the number of Guilders spent (rounded down)