Chapter 366- Tomb of Depraved
After recovering his mana, Simon did not get down to combining the two elements again and instead used the serenity stone. He did not use it sooner because the serenity stones were precious and he only had three with him.
Now that his understanding of combining the two elements had increased, he deemed it worthy to use one serenity stone to try his luck on the amalgamation magic. A transparent, inverted bowl like barrier appeared around him and he was soon covered with an aura that claimed his mind, cleared him of his unnecessary thought and increased his concentration.
Simon had entered the self-transient state. Flames ignited on his left whereas lightning appeared on his right. His hands slowly started coming together causing a repelling force to spread out which disturbed Simon's internal flow of mana, his mana lines.
But thanks to the serenity stone, his level of concentration was at its peak and he was soon able to calmly channel his mana once again.