Items can be crafted to have modifiers from the Generic and Endurance modifier pools. This will replace one or both of the skills that would otherwise be on the item. To craft an item with purely generic/endurance modifiers, use [[Rubywall Crystal]] in both slots. To craft an item with modifiers for one combat skill plus generic/endurance modifiers, use two crystals for the combat skill. Note that mods from the Endurance pool can only appear on item creation and cannot be rerolled using [[Transmutation]]. (Mechanics not confirmed) Using Rubywall Crystal as the primary and a skill crystal as the secondary has been reported to roll Endurance modifiers at a higher rate than other methods. Rumors tell of rare Demonic crafting materials that add generic modifiers in unpredictable ways otherwise not possible...