Strangely, Aura training after that became exceedingly hard. Why? It was just that everything felt so damn simple to the point he just didn't know what to do to see the limit.
The only limit was the duration and the cool down. After that, things were just so easy. That means his quest wasn't going to be solved soon.
In just a day, Seth has pushed his whole aura to his single finger. His body became weak due to that but he can keep it up for 2 minutes. He then tried to push it to the tip of the finger.
Like thick water, it moved and when he tried to move it further, the aura would slip back and cover his body. Seth still believed if he wasn't tired he would have pushed it to the tip. So, this wasn't a limit.
There was also something he couldn't do, and that shot his aura out and also he can't affect everything with his aura. Only things that belong to him but the tree he has been with for 2 months can't be affected.