User blog comment:Xilinoc/Ch. 565 (Mangapanda is run by lazy barnacles)/@comment-29183117-20140122134254/@comment-11051098-20140122162240

Take away every soul that can empower him with its death, and he will become the helpless being he was born as.

Very good chapter. It's good to know Yhwach's motives for this war. He doesn't kill because he wants to, he kills because he needs to.