Clay
Description
Clay is a sticky and soft resource found in clay tiles that can be easily formed into pottery items like clay bowls, clay flasks, or clay jars. Masons also make use of clay as a bonding material for the stone bricks used in guard towers and stone forges, or to mix the better bonding material mortar to build stone houses, for example.
Clay, once dug up, has a high decay speed and is pointless to store for more than a few days. Clay tiles can only be terraformed if previously raised by dropping dirt or sand. To lower a raised clay tile by 1 you must dig at least 10 clays. You cannot lower a clay tile once it has gone back to its original height.