The key phrase was "stacking up to fifty times". Fifty times was a considerable amount, but it was much better than stacking infinitely.
It was not that they could not kill the Fire Elementals; they just had to kill them strategically.
However, Lu Li decided to play around with them to create a false impression that it was difficult for him to achieve First Clears. Other players would always struggle in dungeons, but the Blackrock Depths run seemed much smoother under the command of Lu Li.
Even Sorrowless was completely impressed by him throughout this dungeon.
In the second run, none of the Fire Elementals were killed and all the pressure was placed on Azure Sea Breeze's shoulders. Slowly but surely, Ambassador Flamelash grew stronger and bigger in size.
Fifty stacks meant that his attacks were 2.5 times stronger.
