We already saw that happened to Minene in the last episode. Or this is just another hypnotize thingy power that Tsubaki has and she is actually playing tricks to confuse Yuki, Yuno and Kurusu. S/he causes the temple to catch on fire and the followers to kill each other. Too bad someone is playing the bad guy first before Yuno can execute her plan. Too bad she doesn't know that it was Yuno who wants to kill her for arousing suspicious in Yuki's mind about her. But she already knew this so she is prepared. That something is to exchange Yuki and Minene. Unlike the other owner of Future Diary, she has no intention of killing Yuki, or so she says, but according to her diary, she'll be dead by midnight unless she does something about it. Make sense? Well, it will if you know that her diary is Clairvoyance Diary. She has a gift to see what her eye wants to see and perceives what she needs from what she sees. Kasugano Tsubaki, is the priest lady (still a child by her looks) at that occult temple.
![mirai nikki manga art kurusu mirai nikki manga art kurusu](https://p4.wallpaperbetter.com/wallpaper/817/674/573/mirai-nikki-yune-tsubaki-kasugano-yuki-wallpaper-preview.jpg)
It was the Sacred Eye cult that caught Minene in the last episode which explained the whole eye ball mask thingy.