Becoming a Vessel is a noble goal. Not everyone is able to willingly exchange their mortal life to become the shell of a great Element. But Rabbit was. Faithfully following the path of the Elements, he was honored to become a Vessel, but at the last moment he realized that the only thing he truly desired was to live his mortal life to the fullest. Betrayal poisoned the essence of the Shard. The living soul mixed with it, imprisoning both inside the body, where each wants to seize control.