Bella spells all the things.

So there you are. I can tell you whatever I know but I don't know what you'd need most.

Well, the obvious general approaches are 'support existing anti-Enemy forces' and 'surgical strike with magic he doesn't see coming'; what's your opinion of the viability of each?

I like the second one better. The existing anti-Enemy forces do a good job keeping him besieged up north but I don't think they have a plan to actually defeat him. Of course, if they do they might not have told us about it. Also, the existing anti-Enemy forces are the Noldor and there are problems with giving them guns and things.

Okay. Has he got any known vulnerabilities of any kind?

Not really, no. 

...well, that makes 'surgical' less of an option.

...yeah. Um, destroying his body would set him back a lot. We could steal the Silmarils, I don't know if he's using them for magic somehow, or even if they are more magic than 'shine prettily'. My mom might have ideas.

What distinguishes his body from some regular person's body?

He can make it out of whatever he wants, and probably made it really difficult to injure. 

But in like ordinary, physics ways, like 'lots of fancily arranged carbon', or like some kind of magic ward I don't know how hard it might be to crack? We should maybe try having me directly oppose some magic you sing up.

Ooohhh, good idea. Definitely magic, probably also lots of fancily arranged carbon.

I can try to fend you off from purifying water maybe, or the warmth thing, I bet I have a thermometer in here somewhere.

Okay!

She waits for Bella to find her thermometer.

Bella finds her thermometer, and takes the ambient temperature, and - What area do you cover?

What I want, up to about the distance between here and that hillside.

I'd normally consider it inefficient to try to cool that area, but I have infinity charge now and the really interesting result would be if I can't make any progress or if you can't - how warm do you get a place unopposed?

Comfortably warm, if that's what I'm aiming for. I've never tried using it as a weapon and I don't think I could get hotter than 'uncomfortably warm'.

Try it without me doing anything, first, and I'll get that numerical - we can repeat this another day under different baseline conditions, too.

Okay.

And singing.

So pretty. What's the thermometer say?

Seventy-five Fahrenheit.

Okay. And how fast does it dissipate to what it was before when Lúthien stops singing?

Pretty slowly; couple hours. But I think that's not magic, it's just that a warm area will take that long to cool down.

Yeah, I don't know enough to say otherwise. When it's back to temperature Bella first takes the opportunity to try charging up while timestopped.