Tainted Lilith is a character added in The Binding of Isaac: Repentance. She is the alternate version of Lilith. Tainted Lilith is unlocked by reaching Home and using either the 
Red Key or the Cracked Key to access a special room in one of the walls while playing as Lilith.
She starts with one red heart container, 2 black hearts and 
C Section. Like Normal Lilith, she can't fire tears. Instead of tears, Tainted Lilith uses C Section to launch a baby attached via umbilical cord out of her stomach, dealing x3 damage to enemies it hits. The Baby also will fire tears while the fire button is held, and moves in the direction of the fire buttons. It returns to Tainted Lilith once fire is released.
Strategy and Items
- Tainted Lilith's C Section cannot be rerolled.
- Prioritize getting speed upgrade over other stats. Since the Baby has long range and higher attack, this means Lilith's problem is her base speed. Look to get items that increase speed and avoid those that lower it further.
- The Baby is able to go through rocks. It does not do contact damage
- The Baby can be used to bring items closer to or away from Tainted Lilith, as the Baby does not pick up items.
Unlockable Items
 Characters
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 The Binding of Isaac: Rebirth
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