The miracle caddis pattern was created by Shelton, WA, based professional tyer Don Johnson. His design combines elements of several earlier caddis patterns into a single, easy-to-tie fly. Don used to stage fly-tying marathon fund raisers at Avid Angler and other shops, with proceeds donated to Children's Hospital. His record of tying over 500 of these in a sleepless 24 hour period is simply boggling to me.
The miracle caddis is an extremely effective pattern, fished both dry or wet, on both stillwater or moving. On several of Don's ties, I've caught so many fish that the poor fly barely resembles its original shape and refuses to float, yet the fish still somehow find it irresistable.
I tied this variation on a size 12 standard dry fly hook. I tie in a few strands of clear Antron over a thread base, adjusted so that they're about the same length as the shank. I used superfine dubbing in light olive for the tapered body before tying in an elk or deer hair wing. The wing should only extend back to the bend in the hook, unlike this one which was one of my rejects. Once the butt ends of the wing have been trimmed and tied securely, I used Davy Wotten's Bug Dub in brown olive to cover the butts before tying a neat thread head.