Planar Eclipse

Enchant Nonbasic land.
Enchanted land has "{t}: Untap all creatures you control, after this phase there is an additional
combat phase. Creatures you control gain haste."
Sacrifice four lands: Destroy Planar Eclipse and
up to five lands each of your opponents control.
"I've waited a long time for this day."- Demon
King Uzaan upon his First coming.