@JeremyECrawford sorry, *why does it imply once per round?
— Foxy Boxes (@_FoxyBoxes_) July 8, 2015
@_FoxyBoxes_ The feature is meant to be read in its entirety, which talks about one object. The bonus-action sentence doesn't undo that.
— Jeremy Crawford (@JeremyECrawford) July 17, 2015