Blessing Scroll
Eliminates the risk of an item being destroyed when an improvement fails. In the case of failure, the item's quality is merely reduced by 1 instead.
Blessing Marble
This legendary marble adds a fifth attribute to items that already have four attributes. The addition can also fail though. This item is tradeable.
Blacksmith's Memo
A memo from the blacksmith which shows you how to upgrade items. Increases the chance of upgrading an item from +4 to +5 to 100%.