Card Rulings:Micro Ray


 * You select the monster when you activate "Micro Ray".


 * If you apply "Micro Ray's" effect and then a new card increases the DEF, add the new DEF to the zero.


 * You can activate "Micro Ray" during the Damage Step.

Mentions in Other Rulings

 * Disc Fighter: When "Disc Fighter" attacks a face-down monster, after it is flipped face-up you can use "Micro Ray" to cause the DEF to go below 2000, and the monster will not be destroyed by "Disc Fighter's" effect. Or, you can use "The Reliable Guardian" to increase the DEF of a monster above 2000 so that it will be destroyed with "Disc Fighter's" effect.