"This card can only be activated at the start of Main Phase 1. Until the start of your next turn, neither player may Set or activate any Magic or Trap cards."
Sets: Pharaoh's Servant (Common PSV-062)
This thing is UBER UNDERRATED. When used correctly, this thing >>>>> trunade. With this thing, the backfield is FROZEN until your next turn. Nothing can enter the backfield, nothing can leave the backfield...nothing can ALTER the backfield in any way. Combine this with Non Aggression Area and it basically says "Take another turn after this one."
This is what people get when they don't look at their commons closely. Some of the best cards are commons. I'm running three of these in my deck right now. It's an awesome card to get early, and an awesome card late. The only drawbacks are that it freezes your backfield too, and it's a horrible topdeck. But I say the great things about this card far outweigh the drawbacks.
If you want to try it out, replace every Dust Tornado in your deck with Cold Wave. 8.5/10.