This is how Dracula sucks Princess Celestia's soul goes in
[Late at night, Dracula comes to Equestria]
Dracula: There you are, Your Highness.
Princess Celestia: Dracula, you won't get away with this.
Dracula: I already have.
[Dracula hypnotizes Celestia and put her into a deep sleep]
[Dracula carries Princess Celestia in his arms]
Dracula: Soon with you by my side I will rule both worlds.
[Dracula takes Princess Celestia to his lair]
[Dracula walks up to a coffin and places the unconscious Princess Celestia in it]
Dracula: Now, Princess Celestia, you're under my power.
Princess Celestia: Dracula, take my soul.
[Dracula gets closer to Princess Celestia]
[Dracula opens Celestia's mouth and opens his mouth and Celestia's soul is being sucked up]
[As Dracula gets younger, Celestia turns into a zombie]
[Twilight Sparkle sees Dracula draining the soul from Princess Celestia]
[As Dracula gets stronger, Celestia's body starts to shiver]
[Twilight Sparkle continues watching Dracula draining Princess Celestia's soul]
[Twilight Sparkle gets closer to Princess Celestia and Dracula]
[Twilight fires at Dracula with her magic]
[Dracula steps away from the coffin, causing Celestia's soul to return to her body]
[Twilight Sparkle and Dracula begin their battle]