Baptism is a ceremony in which a Pandora officially acknowledges a Limiter as her bond-partner. The ceremony entails a Pandora removing one of her Stigmata and re-implanting it into the Limiter to create the bond known as an Ereinbar Set, which allows the Limiter to use Freezing. This is usually done in the form of a First Room Invitation (初部屋入り ; Hatsu Heya-iri), where a Pandora invites her chosen Limiter to her room to perform it.