Netzah, Angel of Endurance

If your life total would become 0 you may instead exile Netzah, Emanation of Endurance.
If you do, your life total becomes 50.
{ut}: Untap another target creature. That creature gets +0/+4 until end of turn.
Netzah is brilliant and withstanding. Netzah is trial and the exaltation of endurance.