From Binding of Isaac: Rebirth Wiki
Mystery Sack is an unlockable passive item.
Effects[edit | edit source]
- Spawns a familiar that follows Isaac around and has a chance to drop a heart, coin, bomb, or key (or any of their variations) after clearing a room.
Notes[edit | edit source]
- Prior to patch 1.04, this item did not drop any items, or do anything at all.
In-game Footage[edit | edit source]
Seeds[edit | edit source]
A3ES 1TQN (First floor, Treasure room next to spawn)
QHKQ ZE4N (First floor, Treasure room next to spawn)
CGVC XKY3 (Play as Isaac, and reroll the first item in the secret room just below the starting room)
Q73A BMMP (adjacent to starting room)
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