Cervus, Knight of Dawn

Defender, Lifelink
{g/w}{g/w}: If you have gained at least 4 life this turn,
you may draw a card and put a land from your
hand onto the battlefield.
{g/w}{g/w}{g/w}{g/w}: If you have gained at least 8 life this
turn, swap the power and toughness of Cervus,
Knight of Dawn and it loses defender until end
of turn.