When Spark Fiend comes into play, roll two six-sided dice. On a total of 2, 3, or 12, sacrifice Spark Fiend. On a total of 7 or 11, do not roll dice for Spark Fiend during any of your following upkeep phases. If you roll any other total, note it. During your upkeep, roll two six-sided dice. On a total of 7, sacrifice Spark Field. If you roll the noted total, do not roll dice for Spark Fiend during any of your following upkeep phases. On any other roll, there is no effect.