Soooo...as a GM I would seriously consider altering the spell to better represent the mighty "Mord's" prowess. It could be a long wait for a revision from WOTC. Make it work for your game☺
$25-35 for a book like the DMG, $10-20 for a singular module...more if it was specifically designed to upload into a VTT like Roll20 complete with the needed maps. My gaming group has gone completely online after having to move due to work.
I would like to see WOTC get on board with supplying products that are designed for support of online gaming (e.g. Roll20). Since being forced to follow my employer to another state its the only way my group gets together these days. I'm sure the bean counters at Hasbro have pushed for a product...