Desertification

Enchant Player
During Enchanted Players End Step, Target Players Chooses One Basic Swamp They Control.
That Swamp Loses All Abilities And Mana Types, And Becomes A Colorless Wasteland With The Following. " {p/u}{p/u} : This Land Becomes A Swamp."
{p/u}{p/u} : Destroy This Enchantment