Can you name this book?

[Emery]

Having read much more voraciously as a kid and running through more "pulpy" books pretty quickly, I sometimes can't really recall the name or title of some books I read, but would like to try them again. I assume at least several of our members might have the same problem. Since I have this bank of 300 or so experts in fantasy, I thought I could give them what I do remember and see if anyone recognizes it enough to give me more info. (Pretty much exactly like Loganberry, but fantasy only and free.) I would think it could also be fun to give obscure details about popular books or lots of details about less popular ones that members actually know the author and title to the other members to see if they could name them. Same thread, just differentiated with a "For fun:" of "Really looking:" I'll post at least one of my recollections next to get you started.

[Emery]

Really looking: I read them in Jr. High, so they probably came out in the early '80s It was a series of two young adult books, but I have no idea about title or author. Here are the things I remember:
Two male kids/young adults are travelling (no idea why). At one point they fall into the clutches of a group of witches (though I think they don't know that). Turns out the young girl witch has a ring that can summon/control a earth dragon and her scratching at it causes some tremors during the dinner the 5(?) people are having. I remember later they have found a second ring and I think I recall the witch girl (who goes off with the boys) running around a battle scene lighting fires and summoning the dragons. The only other incident I recall clearly is that at some point the group (2 guys and girl) arrive at a wizard's (?) home. One of the guys is given a test in which he has to nail a board to a wall using enchanted nails. When he hammers the nail in, it magically turns around and comes out of the board, point-first. He finally figures out he must put the nailhead against the wall and hammer down on the board.

Anyone have any ideas?

[This Is Not The Michael You're Looking For]

There's actually an entire group on GoodReads dedicated to this: What's the Name of That Book???

[Jackie]

The group Michael mentioned is excellent, I've gotten 4 out of 5 titles immediately.