Expansion Pack is a trinket added in The Binding of Isaac: Repentance.
Effects[]
- Upon use of an activated item, activates the effect of another random activated item.
- The random effect is any activated item with charge time of 1 or 2 rooms. View the page on activated items for a complete list.
- Timed recharge and infinite use items trigger the effect once per room. Re-entering the room will allow Expansion Pack to trigger again.
Notes[]
- One time use, timed recharge and infinite use item effects are not available.
D Infinity, Dead Sea Scrolls, and Metronome all qualify for Expansion Pack as their (base) charge time is 2 rooms. This may result in activations of items not normally selectable by Expansion Pack.
- If an item like Bob's Rotten Head or Shoop Da Whoop! is selected, firing it will be counted as another item use and active Expansion Pack a second time.
Active Item Modifiers
 The Binding of Isaac: Rebirth
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 Achievements
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 Attributes
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 Bosses
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 Cards and Runes
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 Challenges
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 Chapters
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 Characters
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 Co-op
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 Items
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 Item pools
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 Monsters
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 Objects
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 Pickups
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 Pills
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 Rooms
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 Seeds
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 Transformations
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 Trinkets
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