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Blue Baby is a playable character in The Binding of Isaac: Four Souls.
|Play an additional loot card this turn.|
This can be done on any player's turn in response to any action.
|Starting item||Forever Alone|
Blue Baby can be powerful under the right situations; Forever Alone, while not being particularly powerful on a single cast, greatly increases in power when you can use it several times a turn to gain information, exchange useless loot cards, or just gather wealth. The problem, however, is that Blue Baby must take damage to refresh its ability. Shiny Rock and items that increase Blue Baby's health synergize well with Blue Baby, but not cards that prevent damage.
- Blue Baby was unlocked in the "The Blue Womb" stretch goal in the Kickstarter Campaign. This required drawing dead pictures of Edmund Mcmillen, the games creator, beating Hush in teams of two, but with only one character, and people with tear streaks on their faces posing for a photo, looking sad.