For me it's probably 
E onto someone entering a bush. You use it right before the enemy goes inside, the animation starts playing but the spell gets cancelled (without going on CD, strangely). I want to scream whenever the enemy would have died from it
What's yours ?
Giojun1 votesYasuo's E when near a wall with an enemy, and you dash on him and you go over the wall as well, letting the guy get away from you.
Big Oof :( [zombie-brand-facepalm]
Beatrice falls1 votesI've seen a lot of clips of a 
flashing in an enemy to dash through the next wall. Always laughing my ass off
CrimsonReaperX1 votesWhen I'm playing 
and when I lose Skarl i go invulnerable, but the same effect doesn't apply to when I'm actually mounting. Intentional more than likely, but if the little guy is busting at knee caps with an axe, that 0.5 second window shouldn't be there.
Beatrice falls1 votesNever noticed that one. Well in fact I never play that guy. So it's basically a mini 0.5 stun self stun ? Aw