zoro will use it only twice
First when he give kaidou a scar or open oden scar and cut onigashima in half at same time.
second when he kill kaidou.
First when he give kaidou a scar or open oden scar and cut onigashima in half at same time.
second when he kill kaidou.
I think that would be pretty enthralling overall, and Luffy himself unlocked a new one post TS, eventually Zoro didn't display it yet due lack of impellent need.