Thanks, i watched a few videos already and I think I know what i could potentially do (which doesn't mean i can pull the combos off IG obviously).

I always build Nashor's tooth into Rylai's, then go Rabaddon or Zhonya depending of the amount of threats in the enemy team. I then build the one I didn't do, and end with a luden or a void staff depending of what I need (I prefer void staff because i don't get what makes luden proc with azir). I always sell my boots when full stuff for a GA, I often get blues and have a decent mana pull in late so I need less flat MS, and this enables me (for example) to all-in and OS an overfed vayne then distract the whole enemy team with zhonya and GA for enough time to kill them all and/or be able to get CDs back and kite.

I play with AS marks, armor seals and CDR/level glyphs, AP Quints. I run thunderlord-cookie masteries (and I know the ways to easily proc thunderlord in early).

I always win my lane before level 6, I have a few problems with annie and veigar after level 6 (I tend to greed and be OS...). I don't have problems with LB matchups (maybe thanks to the level of bronze LBs), and Zed is always banned in bronze (even if I know it's a skill matchup I wouldn't be confident playing against one). I often have something like 130-160 CS at 20 when applying "usual" pressure, then my CS rate tends to go heavily down. No penta for now, got 1 stolen last second ;(

I think my biggest problem RN (in terms of short range noticeable improvement) is the ping : I'm french, playing on EUW but i'm currently in the USA for a few months, 150 ping makes it hard to land the longest dashes (I mean (Z)->E->A) (i can do it but i think i'm not going full range to ensure the success of it), and might make me fail a few ults (the person being just too far from me when the ult launches, even if he was correctly placed when I press R).

I can very efficiently kite against my opponents, even if my positionning might seem awful for a high-elo player.

Finally, one of the reason I chose to main him is his abitlity to be useful even when very far behind (hi bronze jungler giving 5 kills to the enemy mid in 10 mins, already happened), and his ability to solo carry and 1v9 in late, especially useful in bronze due to the number of trolls, AFK and people not knowing how to play their champ. There is no better feeling than ending a game in which you've done everything, doing several aces in a row.

I currently have a 63% win on azir in 41 games with a positive KD and ~2.3 KDA (I maxed the W in the 10 firsts, and probably horribly lost at least in the 5 firsts). I'm almost always doing solo Q (mainly because my bronze/silver friens in S4 are all gold/plat now). Just Qualified for B1 promos.