Sona's Q + Power Chord VS Nocturne's E?
It has come to my attention that sometimes - quite often - Sona's Q + Power Chord damage gets negated completely against Nocturne's E If both arrive at the same time as if they were a single instance of damage - Including Lich Bane AND Luden's Echo. I haven't noticed if Hextech Revolver also procs if no damage is dealt.
It happened pretty much while I was playing Sona mid on my main acc and a Nocturne kept persistently ganking me - sadly - and pretty much dealt no damage to him If i even bothered to Q > Power Chord while getting chased and inevitably dying because I couldn't fight Back. And he got away like two times. QQ.
I would have to test if the interaction is similar against Banshee's Veil or Sivir's Spellshield (Since many patches ago Sivir's spellshield started to block the damage portion of Power Chord, I think)
Also, on another note, Sona sometimes (Sometimes™) automatically powerchords a nearby minion/enemy mostly when clicking on a retreating enemy champion with Power Chord ready/at 2 stacks and going out of range or walking back into the lane. Sometimes also happens while clicking quickly after flashing (especifically when turret diving, it seems. ;-;). Not very sure on this, though. Dunno if it is because of actually misclicking a minion while I'm retreating, or because of something beyond my grasp lol.