I'm not gonna go too much further into the details of this build but the main focus of this build is to be a support at the beginning of the game, assisting in getting your ADC built and essentially being an annoyance to the other team, and as the game progresses, becoming an AD bruiser that helps significantly in team fights. Mostly everything is detailed in the notes. The basic idea of this Thresh build is to keep bottom lane warded up and hooking in a ton of kills for your ADC, as laning phase ends you want to swap out your support training wheels for a bruiser big wheel. Starting to build extra AD after a Sunfire Cape and swapping yellow trinket for red trinket. And then just build more AD as the game goes on.