Sonic and Rainbow Dash landed in front of the group at the same time, both having confident smiles on their faces. "Heheh. Piece of cake!" they both said.
Fluttershy approached them both. "Oh goodness! Are you two ok? That looked pretty rough out there!" she asked worriedly.
Sonic smiled and patted Fluttershy's head. "Don't worry Fluttershy! We're alright! And look what else I found on my way back here!" he pulled out the final element of harmony and let it float towards the yellow pegasus. "You know what to do!"
Fluttershy nodded and pulled out her necklace. The element began to spin around her before placing itself into the necklaces' slot just like the last few elements. The entire necklace glowed a matching pink before fading to its regular golden shine.
Fluttershy's Element of Harmony was now restored!
All Elements of Harmony have been restored!
Tails pumped his fist. "We did it guys! The Elements of Harmony are all back where they belong!" he exclaimed.
Everyone cheered but were soon interrupted by a sudden rumbling as a colossal spherical structure began to rise from the distant base into the night sky!
Sonic and Tails stared in shock while the girls and Spike huddled in fear.
"The Death Egg!" cried Sonic and Tails.
Eggman immediately appeared in his mobile just as the giant mini-planet touched the cloudline. "HOHOHO! That's right Sonic! You may have retrieved the elements, but I still managed to sap enough energy from them to complete my ultimate weapon of destruction: The Death Egg 2.0! Now that Celestia and her castle have been taken care of, my plans to conquer this dimension can finally take effect! HOHOHOHO!" he laughed.
Rarity frowned. "Well your so-called 'plans' won't last for long! As long as we're united by the elements, we can take on ANYTHING you throw at us!" she said.
Sonic nodded. "And besides, I've beaten you millions of times before! With Twilight and her friends by me, you're as good as failed!" he exclaimed.
Eggman chuckled. "Oh really? Let's see if Discord has anything to say about that!"
Suddenly, a once ordinary tree changed shape into Discord who grinned before locking eyes with the girls. "Heheheh! Consider your friendship over ponies! Sonic can handle things himself!" he said before forcing the girls into a hypnotic state. Their coats and manes began to lose color and their minds drained of any will to continue or be of any help. In fact, Discord amplified this to fill their thoughts with evil and hatred.
Sonic and Tails stared in horror while Eggman grinned. "You know what they say; You win some elements, you lose some friends! Enjoy your last moments of happiness hedgehog. These girls are going to make you so miserable!" he said before piloting his mobile towards the Death Egg.
Discord grinned before releasing his stare and turning towards Sonic and Tails. "You thought fighting with Rainbow Crash was tough? Well try fighting with 6 ponies who won't give up so easily! Tata!" he waved before appearing to drive away in an invisible...vehicle.
Sonic quickly looked back to the girls who all aimed looks of unspeakable hatred and wrath. "This won't end well…"