Example Final Build
Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
These are just some item builds I've played with on Thresh. I've succeeded in ranked with the first two, but try them in Normals to see how you like the playstyle. Every build has the same start; you sell the coin toward the end of your build. This DOES entail snatching up a LOT of stray CS or snowballing in lane.