hi is simple but i cant find it in official UDE rules please answer me ASAP my oponent activates DUST TORNADO destroy one of my traps then sets the card you may set by the second effect of Dust Tornado then he Activates the set card.

I Say he cannot activate the card set because traps and quik play spells can only be activated if they had the one turn set requirement. please prove me wrong or right i need this info ASAP.

The card set with dust tornado does have to be set for at least one turn

Your opponent cannot activate the just set card, it's a simple basic ruling.

He might have an original Dust.

Destroy 1 Magic or Trap card on your opponents side of the field. You can then set 1 Magic or Trap card from your hand. This card can only be activated if it is a Quick Play Magic Card.

Of course the text has been corrected.

They are all correct. If it's the opponent's turn and you activate dust, you can set for it's effect and then on your turn you could activate it. Great with return, call, escape, reckless greed - especially if a dasher is in the grave, and more. But you cannot activate it on the same turn you set it even if it's quickplay.