Swamp Dude

Swamp Dude has Swampwalking.
{t}: Regenerate Swamp Dude
{b}{t}: Destroy Target non-black Creature.
{b}{b}{t}: Target Land Becomes a Swamp.
{b}{b}{b}{t}: Put a 3/2 Black Dweller Token in Play.
{b}{b}{b}{b}, Sacrifice a Dweller: Swamp Dude
gains +3/+2 and Trampling until End of Turn.
"Watch your steps when you enter the Swamps.
Many Unknown Creatures Roam there."