Our Work is not Finished

As an additional cost to cast this spell, sacrifice all
non-commander creatures and artifacts.
Until your next turn, your life total can't change
and you gain protection from everything.

"Now Amulek said unto Alma: Behold, perhaps they will burn us also. And Alma said: Be it according to the will of the Lord. But, behold, our work is not finished; therefore they burn us not." - BOM