If they buy sweepers
If they have a lot of sustain
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.
Shroom and Teemo placement.
Spend most of the early game in bushes. Use shrooms to cover relics and common bush entry points, and choke points in the map.
Later in the game, if they don't have sweepers, transition to just placing them sporadically out in the open to catch people off guard. They will expect the bushes to be shroomed after the earlygame. Instead of stealthing in a bush, stealth in the middle of the lane on their side of the map. They will check all the bushes wish skillshots, and assume that they're safe. But they never will be.
If they do have sweepers, camp one or two brush and litter them with shrooms so they'll have to hit one if they try to enter. Guard them in case they use the active on the brush, and burst them down.
Show no mercy. Never surrender.