Untargetable Shaco
This is a bug that can be easily recreated
I was playing a random poro king game and i came across with this bug. This can be easily abused as there is an easy and quick way of reproducing the bug. It makes your champion untargetable for a couple of seconds. You can't attack but you can easily avoid some serious damage from other players while being stealth for most of the time if performed correctly.
How to recreate this bug
- Play Poro King (I am not sure if it works on ARAM)
- Choose "Shaco"

- Use your "Poro toss"

- When you hit a unit (Champion/Minion) Quickly press Q and
(to dash to the unit) - If done correctly you should not be able to see your champion but only your summoner's name and health bar. That's what's supposed to happen.
- Watch the clip from the link above. This is a video that shows how it should look like when you perform the glitch correctly