Throne of the dead three fail to find

I have a turbo dungeon commander deck that as main win-con wants to loop through the Undercity to keep activating "Trap!". But sometime my deck gets very small before I can kill my last opponent. So to minimize the amount of cards leaving my library I was wondering I can choose to fail to find a creature when revealing the top ten cards of my library with "throne of the dead three" even if there is a creature in there.