This technique is only to be used in a game of Hide and Seek on The Crystal Scar. Choose Zed, and level up your Living Shadow and Razor Shuriken. Having Trundle on your team may help you, but ninjas work best alone.

Head over to the area shown.
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Walk as much as you can into the wall.

Create a shadow inside the building and swap places.

Wait for you shadow to disappear, then thrown a shuriken in the shown direction.

Now quickly press Ctrl 3, Ctrl 2 and Ctrl 3 in order. Do not do it too fast, just fast enough for your shadow emote to disappear.

Make sure you have a gold income item. Now that you will never be found, you can alt-tab and watch something, or maybe do homework or get something to eat. Every few minutes, however, make sure you move away, and repeat the process. This is so you do not get kicked for being AFK.

Enjoy being an effective ninja.