The theme for this one is, obviously, magic, and thus each of its half-dozen stories—from Justice League Unlimited #11, #14, #25, #33, #37 and #40—deal with magic in some form or another. Sometimes the threat facing the assembled Leaguers is mystical in nature, sometimes the hero starring in the story is magical, oftentimes both.
This is one of those interesting things I was talking about, as the Trenchcoat Brigade hail from the 1990 mature readers Books of Magic series, and would later appear in various Vertigo books. This informal alliance (their name being merely a joking reference made by John Constantine), consisted of Constantine, Dr. Occult, Mister E and The Phantom Stranger.
Writer Matt Wayne and pencil artist Min S. Ku have The Spectre going old school on his victims, which turns out to be a good way to murder people in a kid's comic, given its cartoonishness: He transforms them into fish, and starts fishing for them with a fishing rod.
*While his Paradise Lost wasn't that good, and a disappointment to Young Caleb, who was a fan of many of DC's previous comics featuring angelic and demonic characters and, of course, of JLA and Zauriel, I think Millar's best comics work seems to be his earliest work for DC, although his earliest Marvel work also had a great deal of promise, and some great ideas here and there (enough that they built the Marvel Cinematic Universe on bits of foundation he laid). The more popular Millar got, though, the worse his comics got. I suspect there are a couple of obvious factors at play here, but I think one is that Millar is a writer who needs an editor, and preferably one who can push back against some of his worst impulses and help reign them in if it better serves the characters or story to do so. "Reigning in" isn't exactly Millar's strong point, after all.