he does... Also, you should use the spoiler on threads like this, since the answers will be spoilers...
and, before he does, he gains an other ability, called "fullbring", that, at full power, is very similar to his shinigami power. And he looses that ability almost instantly... Really, what was the point in that again??? Ah, yes, to overpower this arc's arch-enemy, who is, in fact, the other substitute shinigami that turned all Jack-the-reaper agaist Soul Society... Is it me, or does this arc resemble way too much the filler "Bountu" arc of the anime?