Previous video:https://youtu.be/P35NH2UDMd0
Chapter 6: Big Spike

Back in Ponyville, the Mane Six and Spike regroup in town, and Spike receives a letter from Princess Celestia stating that Queen Chrysalis and the rest of her swarm have been spotted heading toward them. As they try to figure out how to protect the town, Shining Armor arrives with the potion he found in the crystal catacombs. Spike is the only one to notice the dragon-shaped engraving on the vial.

Having very few other options before Chrysalis arrives, Twilight drinks a small amount of the potion and uses the magic it gives her to grant extra suits of armor to her friends and brother. As Chrysalis and the changelings appear, Twilight and her friends prepare to fight, but Spike tells Twilight that the potion's spell is intended for him. Twilight disagrees and tells Spike to take cover. The battle between the Mane Six and the changelings begins, but the changelings quickly outnumber and overpower them.

Spike once again tells Twilight to use the potion's spell on him, and Twilight reluctantly agrees. She drinks the rest of the potion and casts its magic on Spike, transforming him into a gigantic, armored beast. With the immense power now granted to him, Spike drives Chrysalis and the changelings away with his dragon breath, and the ponies congratulate Spike for his heroism.