Upper Moon 2 - Douma

[To play this card from hand, you must Destroy Characters you control whose DP totals or exceeds 6000.]
Once per turn, you may activate this effect; until the end of the next turn, all non-"Demon" Characters that enter the field or are currently on the field lose 1000 AP/DP
If "Night-Time" is not in your Special Zone while this card is on the field, destroy this card.