If there was any defect with the way a Mage casted Polymorph, the target would receive a HP Regeneration buff. This actually made the skill quite difficult to use.
Picking the right timing when using this skill was one of the most hotly-discussed topics among Mages.
Once Lucky Southern Persian used Polymorph on Lu Li, his HP would quickly start to regenerate. He would reach full HP in a matter of minutes.
However, Lucky Southern Persian obviously wasn't arrogant enough to presume that he had already won.
He wanted to make the most of the advantage that his teammate had created for him, and planned to take Lu Li down as quickly as possible.
Lu Li tried to hide as best as he could to refresh his cooldowns, but Lucky Southern Persian had high Detection. The most important advantage that he had was that he was experienced. Within three casts of Cone of Cold, he had caught Lu Li.