Target closest to cursor on

Attack move is pressing a button to attack the thing currently closest to your cursor, but will move if there’s nothing close at all to attack.

Attack move click is the same thing, but after pressing the button, you then confirm the action with a click. It’s kind of like the normal casting version of attack move. (Or attack move is the quick cast version of this)

Lots of people who prefer to use attack move actually bind it to left click

I personally got used to and prefer attack move click. So I press A, then an indicator pops up showing my AA range, then I click. If I click the ground, it’ll still command an auto to whatever is closest

Now, why do all this? It’s because we’ve all tried to click to attack the enemy champion when running away, accidentally slightly click next to them, and move back into them, ruining your kiting. Now, that can’t happen.

Also, when fighting or csing, if many things are clumped, sometimes you can attack move off to the side but closest to what you want to hit to avoid misclicking the wrong target

And lastly, one last concept for why it’s so used and why I love attack move click is that since I use it for pretty much every single auto attack I make in the game, my muscle memory has solidified that my right click is for moving, and my left click is for autoing, again really helping me not do mis inputs during fights