Think of one ability/mechanic that you would like to see in league
I have been playing league seriously since preseason of s4, and recently riot has created some very interesting mechanics with champions. There is literally nothing more exciting to me then reading and seeing the new abilities that the designers at riot can come up with. Personally there are a few mechanics that I would love to see in the game, and tell me what you think of them in addition to adding your own abilites/mechanics! Who knows, maybe a rioter will see this and gain inspiration! But anyways, here are mine
Wall pin: Probably an ultimate, would click on a champion and they would charge into them, carrying the enemy champ back in a straight line for x amount of units, if they hit a wall/terrain then the enemy would be stunned for x seconds
Pickup Ammo: Bards chimes gave me an inspiration for this, think of an archer who would have arrows randomly fly into the battlefield, picking these up would give their basic attacks special effects like extra damage, slow etc.
Beastmaster: More of a champion as a whole, but this person would command their animal (Probably a wolf/tiger something of that nature) around the battlefield, almost like a permanent tibbers, their spells would be commands given to said pet and the pet could go a certain amount of units away from the champion, the champion could be easily killed if his pet was not near him as he would have maybe 1 ability that didnt require the pet
Forcefield: A droppable "Bubble" that would destroy all projectiles that come in and out of it including basic attacks. Almost like a 2 way AOE windwall, it can be walked through except it would also affect your teammates projectiles, good for countering long range mages/adcs
So that's all I have for now, maybe more will be added later! What other mechanics/abilities would you like to see in league?

) I think that this is actually realistic.
minion type thing each time you use an ability.