Vanyel thinks for a minute.
"I don't know how your method scales," he says slowly. "I suspect inventing a technique is something only Leareth could do, but it's a lot easier to train mages to cast a known spell – once it's defined enough, you can even build the hard parts into an artifact, skip most of the training. I'm sure Leareth would have people loyal to him he could bring in, if you were willing to trust them. Also, as long as time is paused in our world, and he had a power source," unfortunately the easiest one would be blood-magic and that's obviously not feasible and he's not sure if another world would even have nodes, "it's possible Leareth wouldn't mind getting the casting down to a minute or whatever and the spending the next decade casting it all day every day until he personally hit the full million. Like you said, he's persistent. So far he's spent fourteen years on the project of trying to convince me to work with him, and I don't think he even puts high odds on that succeeding. I don't either – er, or hadn't until now, the fact that he gave you so much information brings me a bit closer to trusting him."
Vanyel clears his throat. "Trusting that his goals are what he says, I mean – I still expect him to do horrible things to accomplish them, it would be understandable if you're not okay with that." And swing back to the second half. "The Valar... I think I don't completely understand what they are. Why would they prevent people from summoning? Er, sorry if you explained and I missed it. Also, um, I think I saw some references in the newspaper but I didn't follow up – what are Dwarves?"