Eighth Edition

Spreading Algae

Spreading Algae can enchant only a Swamp.
When enchanted land becomes tapped, destroy that land.
When Spreading Algae is put into a graveyard from play, return Spreading Algae to its owner's hand.

Enchant Swamp
When enchanted land becomes tapped, destroy it.
When Spreading Algae is put into a graveyard from the battlefield, return Spreading Algae to its owner's hand.

Urza's Saga

Play Spreading Algae only on a swamp.
When enchanted land becomes tapped, destroy that land.
When Spreading Algae is put into a graveyard from play, return Spreading Algae to owner's hand.