"Sure."

Popcorn! 

Elementals like popcorn!

Soldiers find it cheering to offer elementals all kinds of food extravagances and to explain that their planet is so crowded there's no wilderness anymore and that's why they're trying to find new ones.

The lack of wilderness sounds very sad to the ones who were only recently caught.

Well, maybe they will want to go to one of the new planets they're scouting for and help bring it to life! All wilderness there!

Not all elementals are suited to that.

They don't have to. Because slavery is evil.

Maurabel goes back when Penumbra can take her and then Penumbra takes the rest across.

A few more people sell.

The soldiers don't try offering them popcorn.

Maurabel comes back as soon as Penumbra has seen that there are more. She clears amulets.

Soldiers hang around. 

Eventually they have exhausted the willingness of locals to sell their elementals.

Anywhere else where this is worth trying?

Sure, plenty of places, it's a big former empire.

They will go elsewhere and try it!

They get elementals!!!! And so there are more human-type elementals and some of them are willing to explain things to wayward Amenta-type ones.

Which is good because Amentans are starting to regard elementals as eccentric pests. 

And terraformers.

And that. It's common now for people to be super friendly to intruding elementals and then try to explain to them how there'll be more wilderness once the terraforming gets going.

Sometimes that helps!

And sometimes the elementals will participate in MyStream prank videos and that's nearly as good.

They will! Those are fun!

"When are you thinking you'll let people settle the moon?"

"You still think experimental no-reds casteless society?"