"If we're going for mutual destruction, then let's make it absolute!"
After speaking these words, the Soul-Devouring Reaper also chose to self-destruct. It wasn't that he didn't want to escape, but in this dueling ground, faced with such a total spatial collapse, his death was certain. Before he died, however, he feared that the Void Dragon might possess some hidden means of resurrection.
And so, the Reaper also detonated his own being. In doing so, he would ensure the continuous destruction of this pocket dimension, giving the Void Dragon no opportunity to revive. Even if it did, it would only be reborn into an ongoing explosion. This way, the Soul-Devouring Reaper believed, his allies in the final arena would have a better chance at ultimate victory. He had done his part to help his tribe secure that great prize.
By the same token, Leonidas's self-destruction, while costing him his Void Dragon avatar, had successfully eliminated an opponent for the Champions Alliance.
