Carin Shard is a unique Petrified Wand from Diablo II. Tooled towards Summonmancers, the Carin Shard may not have as many skill bonuses as the Arm of King Leoric, but it does have a very large boost to Life that the Arm lacks. Otherwise, the Arm of King Leoric does indeed boost more bonuses for Summonmancers, and gives just as much Mana as well.