Synthetic nightmare

Evening

Revenant was playing with his sphere and thinking. 'Hm, I doubt that these meatbags have a portal to my world. But if they have it-' His thoughts were cut down because he heard:

"Hello, Fluttershy." Revenant peeked out from the corner and saw familiar mares. Main 6.

"Hi, girls."

"Where is Revenant?" asked Twilight. Fluttershy wanted to answer, but her pupils shrank when she saw something...behind girls. They turned around and saw a simulacrum who was standing with crossed arms.

"So, did you find the portal to my world?" asked Revenant. Twilight cleared her throat and said:

"Just a second." With those words, she charged her horn. A flash. Revenant shook his head and noticed that he wasn't in Fluttershy's cottage anymore. He was in the room, where he saw...guards. Many guards. And everyone was staring at him with weapons: spears, bows, magic, etc. Revenant prepared his hand-knife for a fight, turned to Mane 6 and asked:

"Are you trying to kill me?"

"No. Just in case." Revenant turned around and saw Princesses, who were approaching him with two guards. Celestia said:

"Revenant, I am sorry, but we couldn't find how to send you back to your world."

"And you decided that killing me will be a better decision, yeah?"

"No. I called guards in case you become angry and begin killing my subjects." Revenant kept silent and stared at Celestia with angriness, but then said:

"So, now nothing interrupts me from killing you." With those words, he turned into the shadow mode and charged at Princesses, but Luna quickly teleported herself and Celestia to the doors, while guards charged at simulacrum. Revenant pounced two of them and began killing everyone. Main 6 was watching him with a shock and fear.

"Twilight! We must help them!" shouted Applejack. Twilight yelped and shot the beam of magic at Revenant and he disappeared. Everyone looked around but didn't find a simulacrum.

"W-where is he?" asked Fluttershy. Twilight looked around and said:

"I don't know."

"What did you do, Twilight?" asked Celestia.

"I-I don't know. I think I sent him somewhere." Those words really scared everyone.

"You mean he can be anywhere!?" shouted Rarity. Twilight backed away and said:

"Calm down. We will find him. I hope he didn't hurt anypony yet."

Meanwhile

Revenant appeared on the field and fell to the ground. He sighed and got up on his legs.

"Uh, where the hell am I now?" Revenant began looking at his surroundings: forest, green glade, flower field. After short thinking, he chose the forest. Revenant was walking in the forest for about 20 minutes he began feeling annoyance.

"When this damn forest will end?" he murmured. Suddenly he heard growls. He turned around and saw a creature with a saber-toothed tiger's front body and head, a goat's hindquarters and head on its left shoulder, and a snake for a tail. Chimera. Revenant turned his hand into the knife and prepared for the fight. Chimera hissed at its opponent and charged at him, but Revenant quickly dodged the attack. He quickly pounced the creature into its side. Chimera roared in pain and kicked Revenant to the tree. Simulacrum hit the wood and it shattered with a crack. He got up on his legs and prepared for another attack. Chimera began waiting for simulacrum's attack. Revenant threw his sphere into the beast. Creature's snake head quickly ate it, but the sphere exploded in its mouth and it screamed in pain. Revenant charged at chimera and hit its tiger's head with his hand. Goat's head roared, grabbed simulacrum with his teeth and threw him into the nearest tree, which shattered to pieces. Revenant got up and said:

"Now, I am a little bit bored with you, meatbag." Revenant grabbed a sharp piece of wood and threw right into the creature's leg. Now chimera was unable to move and one of its heads was dead. Simulacrum quickly approached chimera and sliced goat's throat. The blood gushed and covered Revenant's body, while the goat's head tried to scream but only made wheezing. Chimera fell on the ground and began convulsing, while Revenant slowly approached heads.

"Be happy, meatbag. You will have a rest soon...I won't." Suddenly he saw that something was missing. After realization, he quickly got down avoiding the snake's mouth. Instead of the simulacrum, snake bit tiger's throat and the poison made chimera to roar in pain. After 1 minute, the chimera was dead, while Revenant commented:

"Death from own medicine. What a cruel irony." Then he headed to the forest not noticing two pairs of eyes that were watching him the whole time.

"D-did you see that!?" whispered Dinky.

"This thing could beat chimera!" whispered Pipsqueak. They were walking around and then heard the roar. When they approached the source, they saw how simulacrum beat chimera.

"We need to come back home, now!" commanded Dinky. Pipsqueak nodded and peeked out from the bushes, but noticed that Revenant was missing.

"Wait, where is it?"

"Didn't your parents say that it is bad to spy on someone?" Both yelped and turned around to see simulacrum who was standing with crossed arms. Foals hugged each other and gulped. Revenant grabbed them by their manes and headed to the forest.

"Ouch, ouch! Release us! That hurts!" shouted Pipsqueak.

"I will make it more painful if you don't shut up." Pipsqueak kept silent, while Dinky was sobbing.

"Mom, please take me away. I want to go home," she whispered.

Ponyville. Night

Main 6 was sitting at the table and thinking where Revenant could be. They searched the whole town but didn't even find his tracks.

"What are we gonna do now!?" shouted Rarity.

"Calm down," said Applejack.

"Calm down!? We have a robot killer who can easily take down an entire army!"

"Silence!" Everyone shut their mouths and turned to Twilight who sighed and said:

"First of all, it's all my fault. I casted the wrong spell and that's why Revenant escaped."

"No, sugarcube. I shouted at you and that's why you did it. It's my fault," said Applejack. Suddenly the doors opened and revealed three ponies. One of them approached Main 6 and shouted:

"Princess Twilight, please help us!" Everyone looked at each other and Twilight asked:

"What happened, Derpy?"

"My daughter. She went to the forest with Pipsqueak and didn't come back yet." Those words made girls began worrying. What if it is Revenant? Twilight got up and commanded:

"Collect guards! We are heading to Everfree forest."