Name: Free_Elf/Bec
House: Hufflepuff
Title: To Protect
Word Count: 493
Ratings/Warnings: 1st-2nd Years, none
A/N: The spell is, of course, piertotum locomotor which McGonagall knew through her times assuming headship in Dumbledore's forced absences and performed after Snape's abdication, according to my personal interpretation 
Sit down. Come closer. Let me tell you a story.
Of course, about Hogwarts. Don’t they make the best stories?
Now, I’m sure you’ve heard that Hogwarts is one of the safest places in the world, thanks to Albus Dumbledore. But he’s not the only one who has worked to protect Hogwarts. The Four Founders were the very first to weave spells to safeguard the school.
Why? Well, back then, more Muggles knew about magic. They couldn’t understand it, and that led to fear, and then that fear led to hatred. Some Muggles tried to hunt down those who could perform magic, to kill them. So the Founders worked to protect the school from the hatred of Muggles and wicked witches and wizards, so their students could study in safety.
There were only the four of them, so the Founders thought they may need extra fighters but they couldn’t rely on other witches and wizards to arrive fast enough in an emergency. So they decided to use animation spells to create fighters out of stone, which was, naturally, plentiful in the castle.
No matter how many clever spells the Founders used, using the stone didn’t work well. They had to first turn the stone into a form which could use a weapon, and that weakened their animated fighters. They could only withstand a few spells before turning back into plain stone, and it was complicated and time consuming to make new ones.
The Founders thought more. If they animated something that could already hold a weapon, their fighters would be simpler to make and stronger in a battle. So they turned to the statues and suits of armour that decorated the school’s corridors. And they were right. The Founders now had the fighters they needed to keep the castle secure.
A new problem then presented itself. The Founders didn’t want their fighters animated all the time; it disrupted the students’ study. They needed a way for the fighters to be ordinary statues and suits of armour until they were needed in battle, when a quick spell would reanimate them. But no such spell existed.
The Founders, over many months, invented a new spell to do just that. It was difficult, and took the efforts of all four working together to craft. I doubt anyone else could ever recreate the spell.
Don’t worry, that doesn’t mean the fighters can’t be used anymore! It’s just that nobody can make any new ones. The Founders set it up so that so that any Headmaster that followed them could speak an incantation and the fighters would awaken.
It really is an incredible spell. No, I know you haven’t heard of it. That’s the most amazing part. The Founders knew that for their fighters to be most effective, they needed to be a complete surprise. So they kept their spell secret. Only the Headmasters of Hogwarts know about it.
How do I know? Well, that’s a secret too.