Time is a difficult thing to understand
Sombra's army charged against the royal guard and attacked without mercy the mindless drones have been under their master's control for years while the Crystal Empire was under his reign of tyranny. Celestia charged out onto the battlefield with her troops at hoof and blasted magic spells left and right at the oncoming charge. Wave after wave of crystal ponies under Sombra's control took out more and more of her troops. she looked over seeing her commander Rainbow Dash who had a prosthetic wing and a chipped ear, she was outnumbered three-to-one and fighting with all her might. Celestia looked up and noticed two ponies pushing a boulder and she was defenselessness already busy with the three ponies attacking her. Celestia watched in horror as the two ton rock was about to crush her finest commander when the Pies came out of nowhere and punched through the rock so hard it cracked to bits, the Pies saluted Dash and made a fighting stance ready to attack anything hostile that came their way. Celestia was caught off-guard as three ponies came out of the snow and were instantly defeated by Celestia's spell cutting them in half. [Time skip to 3 hours later] There was blood on the snow and they had finally infiltrated Sombra's base.
'WE HAVE YOU SURROUNDED SOMBRA!" Rainbow dash yelled.
"You are charged with the treason of Equestria and the murder of Princess Mi A more Cadenza!" Celestia said triumphantly.
"Oh I believe you are mistaken princess for I have the upper hoof or HAND I SHOULD SAY!" Sombra laughed maniacally.
"What are you getting at Sombra?" Rainbow Dash asked inquisitively.
"I have the ultimate weapon that will help me win this war!" He said.
"And what might that be?" Celestia asked.
"A human." Sombra smeared.
"That's impossible humans are myths they only exist in old mare's tales!" Rainbow Dash challenged.
"We shall soon see. HAHAHHAHAHHAHHAHAHAHAHA!!!!!" as King Sombra said that a portal opened and something walked out of it... and collapsed?
"Now that was disappointing." Sombra said as the crystal structure started to collapse whilst teleporting out of it with his magic.
"What should we do?" Rainbow Dash asked.
"Take the human to our infirmary and see if it's okay."