Sam never felt this overwhelmed in his two lifetimes.
As he moved within the shadow world, he saw the shadows of beasts, cultivators, and even some trees that gained sentience.
Every shadow exerted huge pressure on him and he could see the shadow energy corroding his body.
Even his soul and the spiritual core are under pressure.
After ten minutes, Sam finally exited the shadow world.
He reappeared at another end of the planet within some woods.
His body is bleeding and all the cells are corroded by the shadow element, but the spiritual core is absorbing the shadow elemental energy from the body, albeit slowly.
Sam, felt like the whole world is spinning, this bloodline technique is not something that can be used lightly, this took a toll on his body.
This is the price he had to pay for trying to use the power of the beasts. Entering the forbidden realm.