Ji-Joe, Sith of the Swamp

When Ji-Joe, Sith of the Swamp enters the
battefield, search your library for a Swamp card
and put it into play.
{b/g}, Sacrifice a land: Search your library for a
land card and put it into play.
{3}{b},{t}: Gain control of target land.
{4}{u},{t}: Gain control of target creature.