Ether, Last Jaredite Prophet

Flying
When this creature enters, another target permanent gains indestructible for as long as you control this creature.
"...the word of the Lord came to Ether, that he should go and prophesy unto Coriantumr that, if he would repent, the Lord would spare the people. Otherwise they should be destroyed, and all his household save it were himself. And he should only live to see the fulfilling of the prophecies which had been spoken" - BOM