Green creatures get +2/+2 and at the beginning of each player’s upkeep, destroy each creature that player controls unless he or she pays for that creature until end of turn.
Sudden Day {WW} |Instant| Destroy all tapped Elementals. / Green creatures get +2/+2 and at the beginning of each player’s upkeep, destroy each creature that player controls unless he or she pays 1 for that creature until end of turn.