It’s meant to be every time. Mechanically, it is “spend bonus action to get one of these bonuses on your next attack”, and means no tracking of when a character set to a particular option or how long it’s been that way.
It’s meant to be every time. Mechanically, it is “spend bonus action to get one of these bonuses on your next attack”, and means no tracking of when a character set to a particular option or how long it’s been that way.