Actually, Lu Wu's transformation hardly required any effort at all.
He had staged the previous act to have the Ninth Apostle help delay time, run outside the secret realm to transform, but his true aim was to release Little Skeleton and the rest.
Using the army of the Undead, he was to cook a pot large enough to stew the Eighth Apostle.
Then invite the lord into the pot!
The plan went quite smoothly.
The Eighth Apostle, anxious to take down Lu Wu, had never anticipated Lu Wu's trick and had fallen into Lu Wu's trap, becoming a turtle in a jar.
At that moment, three terrifying attacks descended, and the Eighth Apostle faced an unprecedented assault.
The first was the skill "Group Undead Pressure."
Even though Little Skeleton's power was one star less than the Evilized Skeleton King and his Undead Army was reduced by more than a third compared to the Skeleton King.