Break of Day
Dark Ascension — common
Instant
Break of Day rulings:
2013-07-01: Because Break of Day affects only creatures you control when it resolves. It won’t affect creatures that come under your control later in the turn.
2013-07-01: Break of Day checks your life total only at the time it resolves. Any creatures that gain indestructible will continue to be indestructible that turn even if you gain life.