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#150Blue Key"Look between the rooms"Trinket
Entering a room that requires a key or coin does not consume the key or coin, but instead takes Isaac to a newly generated Blue Womb room that is not a part of the current floor's layout, but acts as an in-between passage of the 2 rooms.

These rooms contain assortments of Blue Womb-styled enemies, such as Blue Gapers, Blue Boils and Blue Conjoined Fatties, and are always long rooms.

The rooms can give a reward when cleared, just like normal rooms.

Once exited, the blue room cannot be re-entered.

The door leading to The Hush fight will also create a blue passage room.
Unlock: Defeat The Beast as Tainted Cain.
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