SCP Foundation

After seeing "The Boy Who Would Be King" i got the idea of how unethical Merlin is in using children to defeat a primordial dragon demon and undead fiery horsemen. So i decide to create a Keter class anomaly that can only be defeated by "those pure of heart" story folklore style.

I haven't settle on a narrative, but this are the one's i've got:

• Give the children PSTD, prompting replacements or amnestizing them.
• Turn them into baby Samsara, something similar to 191, or that robot fellow from the "Made in Abyss" anime.
• A mix of both.

If you have any suggestions, go wild.

As you haven't provided much detail into the anomaly at hand which the innocent children are required for I can't comment in that aspect but this would be an interesting idea to follow. As you are using children with pure hearts which disqualifies most children from war torn countries those with mental disorders etc. You would have to take them from perfect and happy families. But as I follow it doesn't have to be children after all children grow and aren't innocent forever so they are substandard. But what if the Foundation could make sapient robots that lack any feelings thoughts or emotions that make something have a "Corrupted heart" So they can't feel anger, lust, jealousy or any tainted thoughts. As i imagine you don't literally need to have a perfect heart to contain this thing.

For the styles of writing I was thinking of one more based around the ethics of containing this thing.
"Do we destroy this thing or sacrifice more innocent pure people to it?" I would also like that if this concept could go for a more conspiratorial tone. Outside of the Foundation by conspiracy theorists about all these missing children.

You would need to give more details about the anomaly at hand for a more in depth analysis.
Also Keter doesn't mean dangerous it just means that it is very hard to contain or even next to impossible