Idea Prompt 77:

 Witch way; Bat way:

 A witch and her group appear in front of X and some of the others. They challenge the group to stop them from collecting the ingredients and opening the gate to their realm. 

 X's group agree to stop the witches, but it comes at a price. Soon, they find themselves turned into bat hybrids then turned into bats. The group is given one hour to get use to their new body before the witches begin.

It seems like the world's balance is at stake...