Mystery Sack#271

Mystery Sack is an unlockable passive item.

• Before patch 1.04, this item did not drop any items or do anything at all. Why it did not work remains a mystery.
• This item is the only "bag" item (Sack of Pennies, Rune Bag, Bomb Bag, and Sack of Sacks), that isn't a counterpart to other existing bag items, rather being a combination of some. Eden Unlocks The Lamb Unlocks The Binding of Isaac: Rebirth
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