Used to collect Souls of Heroes and Bosses.
Killing Bosses or Heroes will grow the charges within.
How to Obtain
Go to alexandria and into the arena move to hero battle circle and choose level four, after the battle the boss should drop a Soul collector.
Killing Bosses or Heroes will grow the charges within. Bring 10 charges to the Fusion Shop to unlock its power. (this is poorly worded, it's only used as part of the fusion).