After five minutes, Sigma confirmed that the woman wouldn't run out of mana… most likely, to keep the transformation, the transcendental beings used their stamina instead of mana, so that woman could stay like that for who knows how long.
At the same time, Sigma had lost a bunch of blood even when he tried to block the attacks of the woman. He was starting to get pissed since it felt like he wasn't fighting but being tortured.
After taking a deep breath, Sigma turned his bow into two daggers, and then the shadow suddenly stopped moving. It looked like she didn't expect that, but soon she began to attack again. His range decreased, so she assumed that she would have an easy time attacking him… she approached even more and began to throw her knives while moving around Sigma.