The level 177 boss in the First Heaven of the Highest Heaven had quite comprehensive capabilities in every respect.
Normally, modifying its death definition to kill it outright would consume an extremely high amount of divinity.
After all, this Fairy Butterfly was a Moon God Tier boss, a whole tier stronger than the Old-Day Giant Pincer Crab, with combat power comparable to the earlier Crystal Walker, Kuber!
Even Nameless Snow, the successor to the extreme cold grand authority, could only kill that Crystal Walker by slowly wearing him down.
Through calculations using the omniscient high minor authority, Qin Feng soon discovered that spending at least 17.25 million divinity would let him modify the death definition to kill this level 177 boss, the Old-Day Fairy Butterfly, outright!
Bombarding it from afar with the disaster grand authority required disaster energy, which recovered rather slowly.
So he prioritized the death grand authority. However much divinity he spent would be free anyway, making it effectively costless.
"I define that, within this area, life-forms whose current movement speed does not exceed 12.5 kilometers per second will die."
Qin Feng watched the level 177 Old-Day Fairy Butterfly.
The Old-Day Fairy Butterfly was still moving relatively quickly, but fortunately, it was moving in a straight line, allowing Qin Feng to predict its trajectory.
He activated death definition in advance on a small area ahead of it!
This was already the definition method with the lowest divinity cost calculated by the omniscient high minor authority, and the area could not be too large either. Even doubling its diameter would increase Qin Feng's divinity expenditure to eight times the original amount.
And so, half a minute later...
The Old-Day Fairy Butterfly suddenly entered the area where Qin Feng had modified the death definition in advance. Since its speed did