@Riot could we know how do you decide on which abilities allow you to flash mid them?
I honestly wonder how the thought process involved looks like.
How do you decide that Lee Song R/flash, or Yasuo's E/Q/flash with knockup is OK, but Illaoi's Q/flash is not, while her Q is obviosly a ton less dangerous for enemy involved.
And don't get me wrong, I'm not salty about that and would consider "Lee Song and Yasuo are supposed to feel fluid and mobile while Illaoi as juggernaut should be powerful but sluggish" a perfectly good explanation, if not for the fact that Illaoi can do E/flash and R/flash - again, both things much more powerfull than slapping someone from extended range.
Is this thing completely arbitrary?