How and when do you need rest? What in general are your capabilities? That would be useful to us in this fight.

I need rest to sleep once every two or three days, and rest to regain power after exerting it overmuch. I will not likely need rest again until I raise a fort. My abilities are a deep connection to stone and metal and to a lesser extent, water. I could cause a flood or rain with the water from the lake but not at the same time as clearing a path, for example. I can produce weapons. Hundreds of identical low-quality swords with rough stone as handles and guards. Little else of use in combat comes to mind immediately.

We're armed. Walls to take shelter behind while this goes on is more urgent. Thank you for your aid. 

She raises barricades and unfoots Orcs strategically, aiming to preserve her strength at least a little. The elves should be able to advance at a fast walk instead of a slow one as long as she's here.

And they do. They are very battered and a little panicked but definitely advancing faster.

She is not particularly good at selecting targets. There's so many Orcs that this doesn't really matter, though. And her steadily advancing line of barricades are doing their job.

They're going to make it out of this a lot sooner than anticipated. And then confront the stranger who is presumably still upset about the boats, very powerful, and vaguely promised to relocate the other host.

They are at the specified spot near the lake soon enough. She raises what she considers a very, very basic fortification. Just one wide, high, thick, slab of a wall with ladders here and there, no watchtowers, not bothering to sink the foundations, no crenelation, not even a proper gatehouse. Enough internal space to fit them all laying down, but not that much more than that. It can always be improved or moved later if she decides they deserve it.

So now some people can rest while the rest of them fight. And there's water. This is a vast improvement.

To the spokes-elf, I will likely return in a few hours. The other elves expected me back by now and I don't want them to think I abandoned them.

Thank you. They're still fighting; he can't spare much more.

Flying off once again. She mutters the local language to herself along the way, as practice.

The other host has selected several locations where they'd like to be.

Does their opinion change at all when she explains the running battle and indicates where she raised walls for the first host?

"I thought they suggested we be put far away from them? I think that's probably wise. We'll talk things out in a year or so once there's less scarcity to worsen things."

"So, perhaps here? I could lift your entire host at once, but it would be pushing my limits and greatly reduce my speed. There would be a very small risk of failing and plunging you all to the earth or into the sea. Perhaps one in a thousand, but still present. Making two or three trips, or building carts and a road for you through the ice, would both be safe."

"Let's not do anything with the very small risk of our deaths, if it pleases you, my Lady Mountain."

"As you say. Roads and carts, or carrying a few thousand at a time?"

"Roads and carts would I think make us feel more comfortable."

"Then roads and carts it shall be. Is anyone an engineer? I can discuss the carts' design. I don't exactly have a standard for this exact situation." Not least of which because a lot of her magic doesn't work here or she'd just make a bunch of flying platforms.

"We should be able to follow."

"How many horses do you have? There's two basic ideas - horse-drawn carts are nice and simple, or I could do a sort of pedal-power thing." The mental image is a three-wheeled cart with a set of gears that would let someone in a sitting position drive a cart's wheels faster and more comfortably than walking while hauling it behind them.

"We don't have horses, they'd have died out here. We have sledges. We can do pedaled carts. The bigger problem, if there's anything you might be able to do for us there, is the cold."

"Right." She's not used to being concerned about things like 'temperature' or 'oxygen' or what have you. "Hm, all the best solutions I could provide to that are bulky or hazardous in other ways. I could make miniature furnaces and a supply of coal. Pumice as walls for the carts, to keep body heat in. Asbestos is an excellent insulator, but it frays, microscopic strands of the stuff get into your lungs, it's a health hazard. I can do closed-pore aluminum foam, but not a lot quickly. Much slower than most of the rest, lots of detail work and metal is a step away from earth already. And it's not actually that great of an insulator, the advantage is that it's very light."

"Can you make rocks warm, lastingly so?"