Key of Oblivion is an active item in Glacier's Laboratory, a mod for The Binding of Isaac.

On pickupStarts with CurrentStage - 1 charges in regular modes and challenges, or 2 * CurrentStage charges in Greed Mode.

While heldSpawns a mechanical worm.

Mechanical worm initially has 3 segments, capable of moving in circular path and devours enemies. Its head deals 4.2 damage per tick (25.2 per second), while its bodies and tail deals 2.4 damage per tick (24 per second).

All trinkets that affect familiar movement does not work on the worm.

Each charge of Key of Oblivion adds 1 extra segment to the worm, plus the following abilities if corresponding criteria is met:
• 4+ charges: Each body fires 2 purple laser beams every second, each beam deals 5 damage and has Brain Worm effect.
• 8+ charges: Tail glows a purple aura that blocks projectiles and confuses enemies for 3 seconds.
• 12+ charges: Breathes purple flames while its jaws are open, each flame blocks projectiles, deals 10 damage and lasts for 1 second.

On useTeleports mechanical worm to Isaac's current position.

If used inside a room with items, deals 2 hearts of damage to self, then adds 1 change to this item and disassembles closest item in the room. This effect no longer triggers once Key of Oblivion is fully charged.

Items disassembled this way are turned into items from the current room's item pool with lower quality, and drops 2 x (OriginalItemQuality + 1) random pickups.

If quality 0 items or glitched TMTRAINER items are disassembled, they will be removed after use.

Items with quest tag cannot be disassembled.

Key of Oblivion can be found in the following item pools:

The following tags are applied to this item:

The following special synergies and interactions for Key of Oblivion have been documented.

* Note that not all possible synergies and interactions are listed here.

• Download Glacier's Laboratory from the Steam Workshop.