Umbilical Cord

Umbilical Cord is a trinket.

Effects

 * When Isaac's health is brought to a Half Red Heart and no Soul Hearts, a 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 familiar spawns and will remain until red health is restored to above a Half Red Heart, disappearing after entering another room.
 * Isaac can only gain one familiar from this trinket.
 * Characters which cannot acquire red heart containers in any way will always have a.
 * When Isaac takes damage, high chance to spawn a familiar for the current room. This effect is stackable.

Trivia

 * 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.