Necromantic Ecology

Enchant land card in a graveyard
When Necromantic Ecology enters the battlefield, if it's on the battlefield, it loses "enchant land card in a graveyard" and gains
"enchant land put onto the battlefield with Necromantic Ecology " Return enchanted land card to the battlefield under your control tapped and attach Necromantic Ecology to it. When Necromantic Ecology leaves the battlefield, that land's controller sacrifices it.