Card Rulings:D.D.R. - Different Dimension Reincarnation

TCG Rulings

 * You cannot activate "D.D.R. - Different Dimension Reincarnation" if you do not have any monsters in your Removed Zone that can be Special Summoned, even if you would discard a monster while "Macro Cosmos" or "Dimensional Fissure" is face-up on the field.