Now it was time to test how powerful it will actually be if he infused it with will. Normally he would only use will to activate the trait which was instinctual.
After the initial use of will he would let the poison spread on it own without his control but this time it will be different. After slightly healing from the soul wound he felt he could control his will.
Actually control it not just use it instinctively. He opened the poison sack and let the poison spread out but before it could go too far he spread his will over and around it.
Then he tried to control how the poison moved, it was hard. Even while using will he realised he still did not understand what it actually was.
Perhaps a manifestation of his desires, he felt that theory was correct but he also felt like he was perhaps simplifying it too much.
He returned his focus to his task, while he was distracted by his thoughts he had lost control of over 40 percent of the poison allowing it to spread out in the water.