The Lurker said:Or a heatseeker/radar guided missle.... hell, even an optically-guided or laser-guided missile such as Hellfire or Maverick.
Of course, we're assuming for the purposes of this shindig that magic in whatever other world this is actually does work in the usual D&D sense with fireballs, shields, etc, when it may well be something totally different.
Publishers of D&D wouldn't know magic if it came up and bit them on their collective ass.