Mysterious artifacts of unknown origin, timewarps allow the exchange of Star Cards and Mars Dollars for MD cards. After activating, miners have reported odd fluctuations in their weapons and defense systems.A timewarp can be opened by any player after completing the Time Crystals Mission. It remains open for twelve hours. Normally players convert lesser star cards to Black Star cards. Marvin can be asked for the time remaining on the oldest still active timewarp with the phrase:Marvin: Timewarp