What ho and well met, mysterious wanderers! In this, our penultimate chapter of our grand and obstreperous quest “In Search of Dungeons and Dragons,” we pit sword and spell against 1981’s “Dragonslayer,” that rarest of beasts: a Disney live-action sword-and-sorcery film. Starring the very . . . pale Peter MacNicol (who some might remember as The Biscuit on the show “Ally Mcbeal”) and the very awesome Sir Ralph Richardson, who walks away with every one of the (very few) scenes he’s in. We’ve got wizards, warriors and a dang cool (non-cgi) dragon. What more could you want? Why, us talking about it, of course! Hearken and stuff!