He was suddenly picked up by Luna, who started flying off when everything started to go into chaos. Changelings, Diamond Dogs, and ponies were running around each other or attacking each other. He could see somepony who was using a shield spell, it was a very powerful one as well and it was very impressive for the situation.
"Luna, I think I see Twilight and Onyx down there!" He yelled so that she could hear.
"Yes, I see them! I'll try to find a place to land to help them!" She said.
Though as they flew in, spells started to be casted and fired at them, it was enough to keep them from landing but it wasn't to actually do anything. Luna was to agile for that, despite her being pregnant. Though something seemed wrong, why were Changelings trying to fire one them when they were supposed to capture him. These spells were definitely lethal.
"And here I thought they wanted us alive!" He could hear her yell.
"That's what I thought to, why would the creature send this army to kill us?" He asked
"I can't land with all of this cross fire! We won't be able to help anypony at this rate! I'm sorry, but we're going have to go on without them!" She said
"As much as I hate to admit it, you're right! I don't want anything to happen to you or the baby! The others will be able to handle themselves just fine!" He said, looking down feeling as guilty as he can in the moment.
They started to ascend, and to fly away the city behind them within moments. Smoke and screams filled the air behind them, and he knew a knot had formed in both of their chest from the guilt. After all, she was a Princess, and he had a lot of magic, it was hard to leave a city under attack like that.
---
He didn't believe this, he could still see what was going on which was a lot more frightening than what anypony could imagine. For he was ruthlessly firing spell after spell each one hitting it's mark, each mark fell lifeless before him. It was horrifying him, and he couldn't do anything about it. As much as he tried, he couldn't take back control.
'Of course I won't allow you take control, you finally released me after so long! After you tried to seal m away, and to top it off you did it for the specific goal. For revenge, to element your enemies! So I will not allow you to get control again, since I know you will never let me out again, and just remember this is your true power not mine.' The voice said, and he realized that he was actually talking, at least his body was.
'No, I didn't actually want to kill! I just wanted to help and protect Twilight!' He yelled.
'And you are, by eliminating the threats.' The voice said.
'No, this is my body! And if I have this much magic, I will take back control and use it to protect her! She's hurt and alone right now because of you! How is that protecting her?' He asked.
"Then I wish you luck." Suddenly he was back in control.
After the initial shock of being back in control, he started to run back to where Twilight was. As he turned the corner, he ran into a small group of Changelings who were quickly taken care of by some guards who nodded to him. He once again went on his way to find Twilight, though as he turned the last corner he was suddenly stopped.
She was gone, where she was when he left was nothing more than a small stain of blood. Panic started ripping through him again as he started to look around, trying to look desperately for any clue on where she was, and what happened to her. Just then, he felt a tug on his arm pulling him towards a house on the other side of the street.
"Thank Celestia! I'm so glad you're alright!" She said, bringing him in a tight hug and started kissing him.
"I-I thought that..." He started but tears cut him off.
"She was in bad shape when we found her, and we didn't know what happened to you." He looked to see all of Twilight's friends there, and some locals in cluding a doctor.
"I assume, you're the one who I have to thank for this?" He asked.
"Yeah, her wound looked a lot worse than it was. It was a bit of a shallow wound, but there was quite a bit of blood lose." The doctor said.
"Thank you," he said hugging Twilight tightly.
"Careful, her wound may not have been that bad, but it was still bad. Though the damage may be more internal than anything is," the doctor said. "Don't want to make anything worse than it is."
"I'm sorry Twilight, I'm sorry that I left." He said.
"Shh, it's okay, I'm okay. I don't know what happened after I passed out, but everything is fine now." She said in a sweet tone.
"As sweet as this is, how are we gonna get out of here with Twilight injured?" Applejack asked.
"I don't know, it won't be easy I can tell you that." Rainbow said.
"I can try to perform an invisibility spell on all of us, though I haven't casted one that big, so it might be more than difficult than I can handle." He said.
"Well, also Changelings are known for deception. How do we know an invisibility spell would even work against them?" One of the locals asked.
"We don't know, but we have to try." Twilight said, looking at him with encouragement.
"Alright, let's try then?" Rarity said.
"But I'm not even sure I can cast one that big though," he said.
"I'm sure we can help out a little." A unicorn said, and the rest nodded in agreement.
"Yeah, especially if it's the only way we can get out of here." Another said.
"A-alright, let's get ready then." He said, starting to prepare himself physically and mentally.