"The Accorders would lament the transformation of their cherished lands, had they lived to see it." —Sheoldred, Whispering One
Official Rulings for Evil Presence
10/1/2009 : The enchanted land loses its existing land types and any abilities printed on it. It now has the land type Swamp and has the ability ": Add to your mana pool." Evil Presence doesn't change the enchanted land's name or whether it's legendary, basic, or snow.