The Offhand Knowledge revolves around Shields and one other item in the knowledge database. In order from when you get to make the item at the earliest to the latest:

• Tree Bark Shield
• Wood Shield
• Iron-Trimmed Shield
• Lionheart Shield
• Dragonscale Shield
• Mithril Shield
• Lightstone Shield
• Darkstone Shield

• cobweb of crystal ball (Tier 1 with Wooden Shield) (Leave uncapitalized as it is not capitalized in-game. When this is updated in-game it will be reflected here.)

There are no power attacks with weapons while holding shields. Players must not have a shield equipped to use power attacks, which for right now is much better to do than use a shield if players are looking for damage output.