When in a suitable area, once per day, a character can search for alchemical ingredients using a Natural Philosophy check. On a failure, no ingredients are found. For each success, a point may be spent to find ingredients.
For one point, an ingredient may be selected from the standard list.
For two points, a rare ingredient will be found from a custom list pre-created for the campaign, or the player may design an ingredient, which must be added to the custom list.
For three points, an extremely rare ingredient may be found, designed by the player, which will not be found anywhere else - though it may be found in the same place again - and should not be added to the custom list.