Mystery Sack is an unlockable passive item.
Effects[edit | edit source]
- Spawns a familiar that follows Isaac around and drops a heart, coin, bomb, or key (or any of their variations) alternatingly every 5 or 6 rooms.
Synergies[edit | edit source]
- BFFS!: The familiar drops pickups alternatingly every 4 or 5 rooms.
In-game Footage[edit | edit source]
Trivia[edit | edit source]
- Before patch 1.04, this item did not drop any items or do anything at all.
Seeds[edit | edit source]
PC A3ES 1TQN (First floor, Treasure room next to spawn)
PC QHKQ ZE4N (First floor, Treasure room next to spawn)
PS4 CGVC XKY3 (Play as Isaac, and reroll the first item in the secret room just below the starting room)
Vita Q73A BMMP (adjacent to starting room)
|The Binding of Isaac: Rebirth|
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