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. :
10 Kill Illaoi GOD destroys Grandmasters - YouTube
Illaoi Build Guides :: League of Legends Strategy Builds, Runes and Items
SUPER TANK ILLAOI! New best build for Illaoi in Patch 12.10 - YouTube
Illaoi Build with Highest Winrate - LoL Runes, Items, and Skill Order
What Patch 12.14 means for Illaoi... - YouTube
Illaoi (League of Legends) | League of Legends Wiki | Fandom