"There are three very young human children in the household - and possibly also house-elf children, they're a sort of domestic servitor species and have children in secret -"

"Hopefully the Enemy won't find out they exist and they should be warned to tell an adult immediately if there are voices talking in their heads."

"Okay, but, like, please don't murder them or anything."

"We've never killed an orc who hadn't sworn the Enemy eternal loyalty and if your children do that and you want to try imprisoning them instead we won't interfere with that."

"Is swearing eternal loyalty here - noncosmetic -"

"Uh, yes."

"...we have a thing called the unbreakable vow which is magic and if you swear one and then break it anyway you die, but, uh, toddlers can't do that..."

"If you swear anything you can't break it."

"Humans don't have that."

"I would be very sure it's 'humans don't have that' and not 'your world doesn't have that'."

"Okay, what's a safe test?"

"You could swear that for the next minute you won't say the word 'aubergine'."

"And I just phrase that like - I swear for the next minute I won't say 'aubergine' - aubergine - how did aubergines come up in your language learning process this early -"

"Yes, but quoting an oath like that isn't binding. We were comparing units of measure."

"I swear for the next minute not to say 'aubergine'. Aubergine."

"Well, that's convenient."

"And we don't have to frantically attempt to censor the toddler's vocabulary, yay."

"Yeah, oaths are really dangerous. Useful, but dangerous."

"Mmhm."

Timothy raises an inquiring eyebrow at his alt. 

"I'll tell you later, it's a long story."

"It's genuinely about a thousand times less important than having a complete picture of your capabilities and noticing other things like the oaths. How fast can the broomsticks travel, can we fly them -"

"You can't if you count as Muggles but checking if brooms respond to you is probably the most efficient way to make sure of that. Hundred miles an hour, Finis does broom design as his day job and could do faster if it matters."

"Probably not the best use of him. Is there a way to reverse whatever brought you here, or prospects of developing one -"