The Last Warrior Alive

Lifelink, First-Strike.
The Last Warrior Alive cannot be countered.
The Last Warrior Alive cannot be exiled.
{g}{g}{g}{g}: The Last Warrior Alive gains Trample
and +2/+1 until end of turn.
{b}{b}{b}{b}{r}{r}{g}, Sacrifice a creature: Regenerate
The Last Warrior Alive.