Warriors are magic (A My little pony and Warrior cats crossover)

Prologue

Spike ran up to Twilight holding a scoll in his claws.
"TWWIII-" his yelling was interupted by a big burp and another scrolls popping out of the green flames. Twilight levitated the scolls toward her and read them over quickly rolling them up and levitating her saddle bag over to her.
"Celestia wants us to come to canterlot along with the girls" it was at that moment when Starlight walked in with Trixie the two talking quietly as to not disturb Twilight and Twilight started levitating things into a bag getting ready to leave while wondering what all this was about.
"Whats with the bag Sparkle?" Trixie asked in her usual demeaning voice towards Twilight.
"Princess Celestia wants me and the other in Canterlot for something" Twilight replied not paying any mind to Trixies tone and Starlight perked up.
"Can me and Trixie come to?" She asked she hadnt been to Canterlot in.... had she ever been to Canterlot?
"Sure why not" Twilight said as she put spike on her back and headed out to go to sugarcube corner to get Pinkie who could easily find Rainbow for her.

In Canterlot

Twlight trotted into the castle with her group of 11 ponies as the CMC ended up tagging along ,somehow convincing Twilight to let them come, and a dragon and looked around in the empty throne room.
"Hello? Celestia? Luna?" Twilight said wondering where the other two princess were and she shuffled her wings nervously. Instead of Celestia or Luna Cadence, Shining Armour and a little Flurry heart being carried by her dad. Twlight and Cadence ran up to each other and did their dance blocking the doors from Celestia and Luna who had walked up in the mean time a strange looking frame made out of wood and leaves and a scroll in hoof. Once everyone was in the throne room Celestia led them to a separate room where the elements of Harmony had been kept before Twilight and her friends reformed Discord. Luna set the mirror frame down from the blue magical grasp. Celestia levitated the scroll over to Twilight and everyone was talking quietly among themselves as Twlight read the spell a confused look on her face.
"Should I just try the spell?" Twilight asked "because I cant figure out for the life of me what this could mean, I mean it seems like it will probably open up some sort of portal but I dont know to what" she said very confused.
"Thats what I was thinking but I wanted to try and figure out wjere it would send us before just using the spell" Celestia sighed and nodded giving Twilight the go ahead to just cast the spell knowing this would probably turn out pretty bad. Luna gave her sister a wide eyed worried look and Celestia gave her a reasuring smile as Twlights horn lit up with its usual pink glow and then there was a big white flash and some screams as the mirror frame suddenly had glass and was sucking everyone into its grasp.

In the Warriors Universe days earlier

Leafpool, Jayfeather, Mothwing, Littlecloud, Willowshine, Kestrelflight, and a dark red apprentice who happened to look alot like squirlflight, who was hiding in the bushes, looked on as Firestar sat down infront of them and began to speak.
"I've gathered everyone in the same dream to tell you something important."
"Obviously, cant you just get on with it already" Jayfeather mumbled in his usual grumpy way. Firestar laughs at Jayfeathers words and starts to speak again.
"when the keepers of Harmony appear they must be divided equally among you, or a great darkness will fall" Firestar said with a serious tone.
"What that even sopposed to mean, I mean this is a little less cryptic then usual but I thought you ,Firestar out of all cats would not be like this" Jayfeather half yelled lashing his tail angrily but that was the end of it and all the medicine cats woke up at the moonpool.