When Spark Fiend enters the battlefield, 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 upkeeps. If you roll any other total, note it. At the beginning of your upkeep, roll two six-sided dice. On a total of 7, sacrifice Spark Fiend. If you roll the noted total, do not roll dice for Spark Fiend during any of your following upkeep steps. On any other roll, there is no effect.