A Henry Stickmin/My Little Pony: Friendship Is Magic Crossover

Equestria is under attack from the changelings, who have taken over mostly all of Equestria, and siezed its capital city: Canterlot, as the main base. With the elements cocooned and all possible resistance suffering the same fate, Celestia uses the last of her magic to call forth 5 warriors from the Henry Stickmin Multiverse: Henry Stickmin (Revenged), Ellie Rose (Toppat Civil Warfare), Charles Calvin (Special BROvert Ops), and Reginald and Right Hand Man Reborn (Both from Toppat King)