Forum:Malefic question help

If I have my field spell dragon Ravine activated while i have my malefic Cyber End Dragon on the field, and my opponent then plays his Zombie World field spell, is my MCED destroyed? I dont see why it would be because the field was never without a field spell. Thedarkdoor (talk • contribs) 15:20, June 20, 2011 (UTC)thedarkdoor