Oracle Text

T: Flip a coin. If you win the flip, destroy all nonland permanents.

Card Rulings

11/8/2016 You flip a coin as Boompile’s ability resolves. No player may take actions between seeing the result of the flip and all nonland permanents being destroyed.
11/8/2016 If you win the flip, Boompile is destroyed along with all the other nonland permanents.