Forum:Chaining mst to an attack

Suppose your opponent has a set card Magic Cylinder/Mirror Force. You declare an attack. Since you still have priority, can you chain Mystical Space Typhoon (or Book of Moon) to the attack so that your opponent can't activate Magic Cylinder/Mirror Force? Ogmaend (talk • contribs) 22:58, August 19, 2013 (UTC)ogmaend