"Whoosh ..."
After the upgrade, the demon Mystic bone saber had become a middle-stage one-star heaven immortal artifact. Sixty billion upper-grade spiritual energy had been consumed in an instant, and an extremely terrifying power was unleashed.
A white vital essence suddenly burst out and transformed into a four-thousand-meter-tall white bone giant demon.
This skeleton demon had eight Spider-like claws.
"Bang! Bang! Bang! Bang ..."
The claws tore through the void with terrifying power. Wherever they passed, the power of the enemy's celestial immortal-level battle formation was instantly blocked.
One had to know that the enemy's battle formation was only at the early stage of one-star heaven immortal realm, which was a minor realm's gap from the dark Demon bone saber.
Although it was only a minor realm, when one reached the celestial immortal level, this gap was simply too great to make up for. It could even be a gap of more than ten times.