Cursed Womb

A Curse Womb (呪胎戴天) refers to the uterus-like apparition that grows a Curse within it that will grow and be released.

Description
Curse Wombs that grow and change shape are expected to produce Special Grade Curse Spirits. A Curse Womb can be created from a powerful Cursed Object such as one of Sukuna's fingers. It attracts other Curses in the area and after gathering enough Cursed Energy, the Curse Womb gives birth to a Special Grade Curse embued with the strength of the Cursed Object used to create it.