More or less everyone knows what most of the champion abilities do. But sometimes, a small portion of them gets overlooked or just forgotten entirely. So to help you, here's a small summary of things you might not know yet or you simply forgot!
Fallen into the abyss
Jax' Counter Strike is an ability which dodges all normal attacks. Most people know that it also dodges every proc of Fiora's ultimate but a lot of people seem to forget that it also blocks 25% Area of Effect damage!
Kayle's Reckoning slows the target and deals some damage, but it also applies a stack of Holy Fervor!
Twisted Fate's Loaded Dice has 33% chance to yield 6 gold, and 13% to yield 1 to 5 gold, making it an averge 4 gold for each kill (also works on bountyless traps like Jack in the Box or Turrets).
Karma's Focused Resolve damages the target over time and snares them if the leash isn't broken, on top of that she
directly heals for 20% of her missing health upfront when she casts it with a Mantra and for another 20% of her missing health as long as the leash isn't broken.
Anivia's Flash Frost is the only ability which can stun through spellshields. You can make it work by popping the spellshield with the normal damage and then re-activating Flash Frost for the stun.
If an enemy champion's health is low enough to be killed by Feast, a red circle will briefly appear under their champion.
Mundo can't die from throwing Infected Cleavers, meaning that he will actually heal a bit if he throws it at very low health.
Rumble's Electro Harpoon's slows stack on each other also refreshing the duration, making it a 70% slow.
Shen takes 50% reduced damage from champions he taunted as long as they are taunted.
If Warwick gets blinded during Infinite Duress, he will deal no damage.
Vladimir's Tides of Blood affects his basic health regeneration, potions and all other incoming healing effects!
Nocturne's Paranoia blocks Shen from using Stand United.
Tryndamere's Undying Rage heals him for 3% of his health at the end of the duration if he is below 3% of his health.
So, perhaps you already knew all these little things, but maybe you learned something new! Be sure to test it out in-game and see if any of these reminders helped you.