Not sure if this is the right place to ask, but how come this question is marked as a duplicate? The cited question was asked 3 years later...
https://boardgames.stackexchange.com/questions/11367/can-an-indestructible-creature-die-by-a-combination-of-damage-and-x-x-effects
https://boardgames.stackexchange.com/questions/11367/can-an-indestructible-creature-die-by-a-combination-of-damage-and-x-x-effects