Orb of Binding upgrades a normal item to a rare item with up to four linked sockets.
Note: If used on an item with more than four sockets, those extra sockets will be lost.
As the example shown above, an Orb of Binding crafts a normal Spike-Point Arrow Quiver into a new rare item.
Buy PoE Currency Cheap
Orbs of Binding drops in Vault rooms in the Temple of Atzoatl.
Binding Shard is a currency item. A full stack will be combined into a Orb of Binding.
Binding Shard drops from areas with Harbingers modifier.
The price of Orb of Binding is about 0.5 Chaos Orb.