"He has returned. He who brought the dark ones. He who poisoned our paradise. How shall we greet him? With swift and certain death!" —Radiant, archangel
At the beginning of your upkeep, if there are four or more creatures on the battlefield, sacrifice this enchantment and destroy all creatures. They can't be regenerated.
With heavy heart, Urza doused one world's light to rekindle another's.