Land of Trances

When Land of trances enters the battlefield, you may pay {2}{g}{g} and search your library and/or graveyard for a Legendary creature called Asterion Skreever maker and, put it onto the battlefield tapped and create 3 2/5 green Skreever creature tokens with defender and reach onto the battlefield. All creatures get -1/-1 until end of turn.
{1}{t}: add {u}{u}{r}{r}{g}{g} to your mana pool and lose 3 life.
{3}: gain 2 life