Easy Land Destruction

You may cast this spell as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step. Creatures you control get +0/+1.

Each land is a Swamp in addition to its other land types.

All Swamps are 1/1 black creatures that are still lands.

At the beginning of the end step, if no creatures are on the battlefield, sacrifice this enchantment. : This enchantment deals 1 damage to each creature and each player.