The Undying Battle is the signature skill of the Undying Saint, and represents the pinnacle of his superpower's development.
As the Undying Saint transcended from extraordinary to saint and evolved into a Tier Three King, this ability became ingrained in his genetic spirit and soul, passed down through his bloodline.
Fundamentally, this ability originated from the Master of the Holy Spring, and was carried forward by the Undying Saint.
The specific effect is that during the duration of the Undying Battle, ordinary damage is suppressed and ignored unless completely obliterated.
This preliminary effect allows a Tier Three entity like the Undying Saint to sustain fatal damage repeatedly, only to continuously revive and be reborn.
It's as if they've donned multiple layers of Resurrection Armor.
Therefore, long ago during the dark ages of the Old Calendar, the Undying Sage, who wasn't yet a Tier Three Late-stage Saint, made his name using this ability.
