What is your hardest spell to smart cast?

Azir's Q and Evelynn's R are both pretty tricky to use without range indicators.

Ryze's q. Don't know what it is, but man, it gets me every time.

I find Victor's E and Rumble's R easy. But for some reason, when I try to dash with Lucian Vayne or Graves, I hold the button for a split second and don't cast it when I want to :(

Annie's tibbers. Even on smartcast, you have to click a location on the ground. it sucks.

LeBlanc's e, cause i just always miss, and her w cause i forget to click where.

When I switched to smartcasts, my first few Death Rays as Viktor were... quite hilarious, I think. I don't think much gives me trouble now, though, except precisely hitting some walls.

Rumble ult no question

charm...

hmm yea, i tend to need quite a while with Diana till I´m able to hit that one...for most other abilities it only needs a few casts to get used to it.

Anything involving mundo's abilities, he's just too dense to smartly cast them