only needed 2 items (testing out new mythics). I can confirm that Radiant is best for my Illaoi, but I will explore all new mythics! Currently finished with this and Jak'Sho. :
イラオイのビルドガイド【キーストーンとミシックアイテムを揃えていく】 - LOLGaren
Draven Illaoi, broke strategy they said : r/leagueoflegends
Illaoi Build Guides :: League of Legends Strategy Builds, Runes and Items