Koshraa saw the orc grab the orb and she covered her eyes, but it wasn't enough to stop it entirely. Her vision was spotted and she turned to see the necromancer get up again. She was running low on mana but she had an idea. She crouched low to the ground and pretended to die, fortunately the orcs were stupid enough to believe it. They left her alone and she made sure to be out of the necromancer's field of vision and blinked a few times to get that flash out of her eyes. 

Koshraa put a hand to her side and winced as she saw blood. She knew that if she took out the necromancer once and for all the orcs would hesitate, he seemed to be their leader. But she also knew that there was no way she was going to take him with these injuries. She thought about something she could try, but after a minute just shook her head and said.

"Screw this, I'm getting out of here."

Using the last of her mana, Koshraa created a huge fireball that cleared almost all of the distance between her and the gates. The orcs were still trying to kill her, and her wounds were growing more severe, but somehow she jumped, slashed, and stabbed her way through them until she collapsed behind the front line of city soldiers. Her adrenaline was pumping hard enough to get into the city and hopefully to some healing but as she ran she shouted.

"The Human is a necromancer! Take him out!" The soldiers swiftly redoubled their efforts and focused on the human among the orcs. Koshraa found a medic and collapsed, allowing him to use his magic and medicine to start treating her wounds.