Fairy Tail Volume 17 by Hiro Mashima
The battle between the Oracion Seis guild and Fairy Tail's alliance of guilds continues as both groups search the woods for the source of Nirvana magic, an ancient and mysterious power. Wendy, who is a healer for the good guys, has been kidnapped by the Oracion Seis. Erza has been poisoned by one of the Oracion Seis, so the number one priority is to recover Wendy to heal Erza. Turns out the bad guys kidnapped Wendy to heal someone else...Jellal from the Tower of Heaven story arc! He's revived, Wendy is recovered, and Erza is healed. Meanwhile, the Nirvana magic is also activated. It has a nefarious effect--it turns good people into bad and bad people into good. Can the Fairy Tail team succeed without getting corrupted? The story isn't finished in this issue but is exciting with a strong cliffhanger ending.