Al-Kimia Al-Qadima (錬金魔法 Arukimia Arukadīma, Alchemic Magic) is a type of Magic Yunan uses. He gathers particles floating in the world around him and reconfigures them to create totally different things. Thanks to this, he can create anything in seconds, ranging from food to houses.
Aladdin uses Al-Kimia Al-Qadima to replace Hakuei Ren's body to prevent Arba from manipulating it, this allows Hakuei's Rukh to dwell in a body that is different from her original thus leaving no one for Arba to possess in their world. Yunan states that Al-Kimia Al-Qadima reconstructs objects on such a molecular level, that Aladdin simply replacing a body is unbelievable. 
- This name of this magic is derived from the Arabic phrase الكيمياء القديمة Al-Kīmiyā' Al-Qadīma(t), meaning "Ancient Alchemy".