Kiln of The First Flame

Enters the battlefield tapped. Every two turns,
one land you control becomes a copy of
this land, but such copies can only be
tapped to gain 1 of any color mana.
{w}{w}{w}{w}{b}{b}{b}{b}{r}{r}{r}{r}{t},
Sacrifice this land.
The chosen opponent's lands are exiled.
"The great tide of human enterprise-
this must be what it's like to be a god..."
-Unknown.