Murky Mire

Murky Mire enters the battlefield tapped unless
you control a Swamp.
{t}: Add {b}.
{t}: Add {b}{b}. Murky Mire doesn't untap during
your next untap step.
{b}, {t}: Draw a card, then lose 1 life. Murky
Mire doesn't untap during your next untap step.