Yoon Si-yoon and Kwak Si-yang worked in combinationto place Yeom Jeong-ah in danger of wasting her Black Magic.
On the episode of the JTBC drama "Mirror of the Witch", Heo Joon (Yoon Si-yoon) used to be angry about Hong-joo's (Yeom Jeong-ah) plot and discoveredsome way to cast off her Black Magic in order that she may just never put Seo-ri (Kim Sae-ron) at risk again.
Poong-yeon (Kwak Si-yang) attacked Hong-joo so that she could not role Black Magic yet Choi Hyeon-seo (Lee Seong-jae) came to visit at that moment and stated she couldn't use Black Magic without the Black Stick. They wished bait and Seo-ri volunteered.
Heo Joon found the Black Stick. Hong-joo saw him with it and concept he turned into dazzled via Black Magic. However, Heo Joon overcame this and threw the stick over a fireplace created by Poong-yeon. Black Magic appeared to ooze out of the stick.