They just made it fit the Innistrad story line, Havengul being a town or province in the Plane of Innistrad. But your Piece of work is everywhere now since the release of Dark Ascension so not much to complain about. Like its on FNM posters, Dark Ascension packs, Promo cut-outs. Ill Have to track a Havengul Lich down.
Yeah That Lich is even on the Dark Ascension fat-packs, the Booster boxes, everything. So yeah, just walk into a comic/collectibles shop that sells MTG or hosts Friday Night Magic, you'll see it I guarantee it. Probably some of your other MTG work too.