The top champions out of lane to counter 아지르 include 닐라, 자야, and 제리. These are all good at countering 아지르 with decent win rates over 64%. Even if these 아지르 counter picks are not picked in your lane, it's not smart to take him into any of these matchups. They will very likely beat 아지르.
Yet, if the other team brings either 갈리오 or 쉬바나, 아지르 mains should seriously consider taking him, as he easily wins against these champions with win rates over 52% against both ofthem.