Ilna, Titan of Life's Bounty

When Ilna enters the battlefield, sacrifice it
unless it escaped.
Whenever Ilna enters the battlefield or attacks,
you gain life equal to half the creatures you
control rounded up, then you put a +1/+1
counter on each creature you control.
Escape-{w}{w}{g}{g}, Exile five other cards from
your graveyard. (You may cast this card from your
graveyard for its escape cost.)