Soul birth

Flash. {t}{0}, sacrifice this: Destroy target creature. its owner creates a 1/1 black and white spirit token with flying. If this ability targeted a legendary creature, return this to the battlefield with one less soul counter and gain control of the spirit. This enters the battlefield with 5 soul counters. If this has no soul counters on this, destroy it and put 5 soul counters on it. If creatures enter the battlefield while this is in the graveyard or exile put a soul counter on this. If there are no so