Jar of Wisps

Effects

Spawns a wisp that orbits Isaac, fires tears, blocks enemy shots, and deals contact damage to enemies, much like the ones spawned by Book of Virtues.
- The jar initially spawns only one wisp, but spawns an additional wisp each time the jar is used, up to a maximum of 12 per use. The amount of wisps that will be spawned by the jar is indicated by both a counter and the jar visually filling up with wisps.
Isaac can have up to 3 rings of wisps; an inner, counter-clockwise spinning ring of 6 wisps, a center, clockwise-spinning ring of 8 wisps, and an outer, counter-clockwise spinning ring of 12 wisps, for a total of 26.

Car Battery: Only spawns one extra wisp per use, regardless of the current wisp count.
Void: Will spawn only one wisp per use.

The wisps spawned by the jar can be ones created by any Book of Virtues synergy, although basic wisps are much more common than special variants.
While most wisps that can be given act similarly to normal wisps, there are some with effects that can potentially harm Isaac.
- Anarchist Cookbook Wisps look like bombs and spawn (Troll Bomb) Troll Bombs when destroyed.
  - Mama Mega! wisps look like gold tinted bombs, and will spawn (Golden Troll Bomb) Golden Troll Bombs.
  - Bomb wisps with a gray tint are not dangerous; Doctor's Remote wisps only invoke their special effect when said item is used.
- Wisps that look like gray cubes will invoke the effect of the D7 when they take damage. If this happens during a Boss fight, Isaac will be teleported to a random room on the floor, which will have its enemies respawned.
  - Teleport!/ Teleport 2.0 Wisps fade into and out of existence and have a chance to teleport non-boss enemies to a random spot in the current room when their tears hit them.
Switching the jar with other active items and then picking it up again does not reset the number of wisps that will be spawned on use.