Treasure Bag (Wall of Steel)

This is an Expert-Mode tier Treasure Bag for the Wall of Steel. As most people know, in Expert Mode Treasure Bags drop from bosses and contain their usual drops, along with an Expert Mode- Exclusive item (e.g. Eye of Cthulhu drops Shield of Cthulhu). This Treasure Bag's exclusive item is the Mechanical Heart, which adds 2 extra accessory slots.