Hook: Any panfish hook (here, a long shanked size 6)
Thread: 6/0, white
Tail: White marabou
Body: White/silver estaz (aka ice or sparkle chenille)
Like the Simpleton, this one's great in cold water. It's also good with a bead head to get down deeper if desired.
Edit: As I sit here looking at this fly and its relatively short materials list, I'm kicking myself for not using it in the Simple But Deadly swap.