Re: Expedition to Myth Drannor
Corym
"Poetic," Neldor says. "And mostly accurate. Though if you're going to be facing the planes, or their denizens, it's best to eschew poetry. And someone definitely needs to sit down with you and explain the Astral and Ethereal planes if you ever decide to leave this one."
He stops for a moment and gathers his thoughts. "I have spent centuries honing my Art and delving into its depths. I can weave cloth from a coward's fears and brew elixirs that contain the rage of giants. But the planes make even my brain hurt. Each one is infinite in its own right, yet they have borders and often interlocking layers. Travel there is fraught with danger, as even the normal rules of nature we live by sometimes change.
"But even if you don't go to them, their inhabitants can come to us. Yugoloths led the Army of Darkness, but in the ruins you're most likely to encounter baatezu and tanar'ri. Note the names; 'demon' is a human corruption of a planar word, and is considered an insult. Call them what they are. 'Fiend' is an acceptable generic term. Both are thoroughly evil, but the baatezu are thoroughly lawful, and the tanar'ri are just as thoroughly chaotic. They hate each other with a burning passion. Most tanar'ri are in it for the rush and the crunch. Baatezu like that as well, but they'll generally try to wrap you around their finger first.
"As creatures born in another plane and survivors of years of war, even the least of the fiends are dangerous. I don't know many specifics; I try to keep as far away from fiends as possible. Here's what I do know. All fiends are immune to normal weapons. You'll need enchanted weapons to hurt them. Silver weapons are also effective, and tanar'ri are vulnerable to iron weapons forged without heat.
"All of them are magical to at least some degree, with powers that they can use at will. The mythal is blocking some of those; I don't think they can teleport, and I know they can't gate in more fiends. They're resistant to most forms of elemental damage, though acid tends to work well. And like the drow, they have magic resistance. Though it's generally weaker than that of our dark brothers.
Otherwise..." He spreads his hands. "As I said, I try to avoid them. They're tough, resistant to magic, and most of them are smart. It's a bad combination. You have a group; work together. The first priority for both tanar'ri and baatezu is always themselves. They're always looking for ways of advancing their interests and position. And they always, always try to defeat the other. Maybe you can make use of that."
He pauses, then gives you a strained smile. "Oh, and you're wrong about the faeries. No one knows where they came from. Unlike the tanar'ri, they don't have a home plane."