Hi,

I remember a while ago I saw a video by swimmingbird I think. He created a system where when he placed a wooden log and it then made him invisible. I think it used a scoreboard objective that increased whenever a wooden log was placed. It then had a testfor command which tested if the value for wooden logs placed. If it was 1 the objective was reset to 0 and he was given an invisibility effect. The thing I want to know is what the scoreboard command is. Like what type of objective was it. If possible give multiple examples and a link to the video or a webpage about it.

Thanks!