Rena, Nicah Emperor

Deathtouch, lifelink, trample
When Rena, Nicah Emperor enters the
battlefield each player loses 3 life, you gain life
equal to the life your opponents lost this way.
{6}{w}{b}{g}: Exile Rena, Nicah Emperor, then
return them to the battlefield transformed under
their owner's control. Activate this ability only
any time you could cast a sorcery.