Helpful Tips and Tricks for playing as X champion

Over the years many of us have picked up handy little known tricks to give us the edge when playing as a champion. I was hoping some of you would be kind enough to share some of your knowledge. Here is a few of mine:

-When facing a (highly) reactive player who has a dash you may find yourself wasting your pull far too often. After missing your second pull wait the 16 seconds and then start walking back and forth horizontally. When the adc moves to bait out your pull turn in his direction and start to dance. As soon as they see the animation change they usually burn their dash. This leaves them a sitting duck for x amount of time. It works stupidly well with iBlitzcrank skin (not only because of the skin being better for landing pulls but the similar appearance of dance/pull)

- Can jump through way more walls than you usually see in professional play. The thick walls by mid lane bushes are actually passable if you jump at the exact spot. This spot is marked by the end of the tree line that are stacked along the rock pass. You can also wall hop through the raptors wall directly into midlane turret.

- One of the more commonly known tricks but if you proc your Cannon stance W atk steroid and then swap to hammer stance you retain the atk dmg/atkspeed boost whilst gaining the benefit of your W mana restore passive. This is one reason why it hurts so much when a Jayce brings the hammer down so to speak.

I have more but I'd like see what you guys have to offer as well.