Doom's vortex manipulator

Doom, an assassin who worked for the Lesser Order of Oberon, owned a vortex manipulator to which her employers transmitted a large number of coordinates per day. Every hour, she could select one of those sets of coordinates at her discretion and travel there. It could also project a pink holographic digital clock counting down a day's 24 hours. (WC: Meet Doom - the Universe's Greatest Assassin!)