Talk:Semblance/@comment-174.134.155.168-20170119054604/@comment-4010415-20170124232440

He only summoned 3 clones at once when fighting the Sea Dragon.

While trying to hold Ilia down with 4 clones, it's not necessarily that he has to concentrate, so much as he has to remain still while controlling his clones (according to the writers). So, he had to hold the pose he was in to keep making the clones hold her down. The concentration part came in when she struggled against them.