Umbilical Cord is a trinket.
- When Isaac's health is brought to a Half Red Heart and no Soul Hearts, a Little Steven familiar spawns for the current room.
- When Isaac enters a room and has either a Half Red Heart or no Red Hearts at all, a Little Steven familiar spawns and will remain until red health is restored to above a Half Red Heart, disappearing after entering another room.
- When Isaac takes damage, high chance to spawn a Gemini familiar for the current room. This effect is stackable.
- An umbilical cord is a tube that is connected to a fetus' stomach and is used to give nutrients, blood, and oxygen to the growing child.
|The Binding of Isaac: Rebirth|
|Achievements||Attributes||Bosses||Cards and Runes||Challenges||Chapters|