Guidepost Grotesque

(Guidepost Grotesque is black)
As long as you control a forest, you may choose
not to untap Guidepost Grotesque during your
untap step.
{t}: Tap target creature that is attacking you and
remove it from combat. It doesn't untap during
its controller's untap step for as long as
Guidepost Grotesque remains tapped. If you
control a swamp, prevent all damage that
would be dealt by that creature this turn.