The Ferdiad Cycle
A strong and durable wood
Everoak is an exceptionally strong and durable variant of the regular oak tree. Everoak is a higly priced material that takes a very long time to decompose. It is often used to construct building elements such as doors.
Items made from everoak are much harder to break than those of normal wood, hence their Hardness is increased by 1. In addition they receive a +4 to saving throws against all spells that either rot or decompose wood.