Jeserun God of Azalis

Indestructible, First strike, Vigilance
If you have 10 or less life you may cast Jeserun
God of Azalis without paying his mana cost
As long as Jeserun God of Azalis is untapped prevent all damage that would be dealt to other creatures and planeswalkers you control
{5}{w}{w}{t} Your life total becomes 50