As the title says.
In your opinion, what do you think which champion's ability would be freaking overpowered if it dealt true damage instead of physical / magic damage?
E.g. Veigar's ultimate. That would be insane!
And go!
Ult (Also known as the spinning buzzsaw of doom)
Q - spam that true damage all day long :p
W- lets see 
instakill Kog now
W.... wait a minute .__.
Q
passive
Q
Ult
Diana's E.
Nah, just kidding. Teemo Shrooms. Enough said.
The answer is always
Ult O.O
edit: Get spooked!
5-man ult tho.
ult... meaning... all her abilities and aa while her ult is active are... yeah
Ult, as if a 5 man ult wasn't satisfying enough.
R passive "For fifteen seconds, Yasuo deals 50% of his AD in True Damage"
E - it hurts like hell already lol
R - Tibbers goes from a nuke to a veritable death bomb
Q - The extra bolts deal true damage instead. Oh dear.
W autos. I'm pretty sure that'd make him broken OP, too. xD
Passive. % max health true damage per second ayy
R. Bodyblocking now not as much of a good idea.
Q. Old Max-Q Cass is back?!
W. Very reliable instant damage + silence is already strong
I want to say R, but E. Burrrrnn baby!
Passive. The bleed is already stupid, now it can't be stopped. XD
Q. It already does % current health. Why not make it dumber?
Q. The bonus damage is effectively a free crit. How about a true damage crit?
R. Welcome back post-rework pre-nerf AP Eve!
Q. Lol good luck bodyblocking that now
I wanted to say R but W. True damage healing hooo
W. % missing health true damage per second!
R. Since barrels are basically true damage anyway, why not make R become monstrous?
E. Spin2Win just became even more relevant.
W. It's basically Vayne's W but better now. xD Runaan's Gnar is now viable!
Q. Bring on the pain!
E. The Rend nuke is now even more terrifying.
E. I wanted to say R, but making E become a veritable Fiddlesticks ult was too good to pass up.
Q - both base and mark proc.
Too lazy to continueeeee
Full AP ult with someone standing dead center for the whole duration: Maximum Total Damage with Fire at Will and Death's Daughter: 1050 / 1470 / 1890 (+ 210% AP)
I mean, ffs, devour on true damage?, or maybe his passive damage?, that'd be hella broken.
R
R
Tentacles
R- wait a minute
Q, E and R
It's not like it would change much of the outcome, Draaaaaaaaaaaaaaaaaaven always wins
Empowered E.
R gg
R
R
Q - Might actually be a nerf because people will realize sooner that chasing him is a mistake.
R - All her attacks deal TRUE damage for the duration. Kill me now.
W
E: Champions hit by this ability will make 20% of any of swain's incoming damage true damage.
He will burst you with DPS
Double-length Headshot
Karthus ult
Q
Q or Center of Ult
Ult
R
R
R
rend
ult
hammer E
ult
W
Q or W
Q.
The answer it's always
's E!
... oh wait
Cassiopeia's Twin Fang.
's E Passive. Because Riot LOVES HP% True Dmg
R. It already does so much damage it may as well be true damage now!
Q/Mantra Q intensifies
Q
R
R
R
R
Q
