At the crystal cave

After listening to Crystal Of Death, explaining that if she accepted to become the owner of Crystal Of Death, she would be merciless and would assume the responsibility of protecting the balance between life and death and above all, she must destroy anyone or anything that threatens that balance and this is something she has never thought of before. It was scary to kill someone even if it was her enemy.
'Although being a Lord Of Death is scary, I have nowhere to go as soon as I can get out of here, and I'm sure I'll never go back to those traitors !!!!' she thought.
A little later ~~~~~~~~~~~~~
Finally, Twilight has decided, "Crystal Of Death! Are you still there?" she called.
"I'm still here master Twilight, have you made your decision?" Crystal Of Death asked.
"Yes, I have made a decision. I will become your master! " Twilight answered.
"are you certain? because if you receive my power, you can't turn back, your life will never be the same again, though you still accept my power and becom Lord Of Death?" Crytal Of Death asked.
Twilight lowered her head for a minute before answering firmly, "I will accept your power and become Lord Of Death."
"Very well, if you're sure we'll start the ritual," Crystal Of Death said.
"What ritual?" Twilight asked.
However Crystal Of Death did not answer. Instead, a light emitted from within the crystal wall...from inside wall a dark gray crystal appeared. This is the first time that Twilight has ever seen the crystal so clearly and she can feel a terrifying power from the crystal, this power is even stronger than all power of Celestia princess, Luna, Discord and Element Of Harmony factor adds up to a hundred times.
"Now repeat what I'm about to say master Twilight" Crystal Of Death said.
"Alright" Twilight answered
"My name is Twilight Sparkle, I am the orthodox master of Cystal Of Death and I accept the ultimate power of death as well as the responsibility to protect the balance between life and death and become the Lord Of Death forever!" Crystal Of Death said and Twilight followed.
After Twilight followed Crystal Of Death, its dark gray light glowed even more and slowly Crystal Of Death approached her chest ... And with a blinding light, Twilight closed her eyes and When she opened her eyes, Cystal Of Death was gone. But then she felt a tremendous power in her heart and it gradually spread throughout her body. She could feel the power of Crystal Of Death flowing into her veins. And then suddenly she lost consciousness.
Half an hour later ~~~~~~~~~~~~~~
Twilight dreamily woke up, her head ached terribly "ow ~ my head, what just happened. I remember that I received the power of Crystal Of Death and became Lord Of Death, and I felt a tremendous power flow into my body and then my vision was dark," she groaned.
'It's because your body still hasn't adapted to my strength, but don't worry, you'll get used to it soon, my master' a voice suddenly rang in her head.
"Crystal Of Death? Is that you? Why are you in my head?" she asked startled.
'Yes it me. And I am not in your head, I am in your soul, or rather I am united with your soul so my power has flowed into your body and because of my power is too powerful and your body is not ready so you fainted like that. As for why I am able to talk through your mind, it is because now me and you have become one so I can talk through your mind. And you can call me Death if you want, my master' Crystal Of Death to speak
"I see ... So how to use this power? because I don't think there's any book in Equestria about how to use the ultimate power of death" Twilight asked.
'Of course I will show you how to use my power. Now I will instill in your brain all the knowledge of my power, rest is up to your ability to receive them to learn' Death said
Then, in the brain of Twilight suddenly all information and how to use the power of death such as reading minds, feeling the soul, the eyes of the dead ... And even Lord of Death's greatest power, according to the information she received from death, was that power in the form of a scythe, and when she summoned it, her power of death would increase ten times.
'That's all my knowledge of my power. However I recommend not using the last type of power, my master' Death said.
"You mean scythe bar? But why? Isn't that Lord Of Death's greatest power? " she asked confused.
'Because it is the greatest power, your current body cannot withstand its pressure because your body has only received my power so it has not been able to adapt, and the scythe bar will make your death power increase tenfold which will greatly reduce your body and you will lose consciousness or worse you will die' Death explained.
"Okay I won't use it" Twilight said.
She looked around the cave to find an exit "so how can we get out of here ?"
Twilight began to walk around the cave to find an exit. However, she had no clue. While annoyed at not finding the exit, she heard a cry in a corner of cave, she stepped closer, her eyes now visible in the darkness 'probably due to power of death' she thought.
In front of her, place where the crying was made of crystal pillars separated her from any creature in it. She decided to use her magic to break crystal pillars, her horn glowing, but her light magic was not purple of lavender but it is a dark gray instead. However, she did not pay any attention to this and continued her spell and released a dark gray beam that destroyed crystal pillars.