Orb

Orbs are offhand items for spellcasters to wield. Equipping an orb is like using a shield, however when you block with it, a magical barrier of force provides an Orb Bonus to your saving throws and energy resistances. This is in addition to any effects listed on the item. Note that unlike shields, orbs do not inherently increase your Armor Class and Damage Reduction.

First orb was introduced with Update 16. Only characters with the Magical Training feat are proficient with orbs.