Grangroth, Titan of Rage

When Grangroth enters the battlefield, sacrifice
it unless it escaped.
When Grangroth enters the battlefield or attacks,
untap target land you control. It becomes a 3/3
Elemental creature with haste until end of turn.
It's still a land.
Escape—{r}{r}{g}{g}, Exile five other cards from
your graveyard.