Warm Orange Runechalk

Chalk One Up. As an action, you can use this chalk to draw a simple symbol. A creature must have an Intelligence score of at least 10 to draw these symbols. You can draw up to 20 symbols with this chalk before it is completely used up. Using this chalk, you can transmute any type of material. This chalk does not work on equipment or weapons that are being worn or carried.
  Tree. Turns a 5ft. cube of material into wood.
  Pickaxe. Turns a 5ft. cube of material into stone.
  Anvil. Turns a 1ft. cube of material into iron.
  Bucket. Turns a 5ft. cube of material into sand.