Illaoi Runes explained
There's one set of runes for Illaoi on patch 14.12 that is the clear favorite for LoL players and pros alike. The best Illaoi rune paths on the position 
Top are 
Resolve as the primary path and 
Inspiration as the secondary path with a pick rate of 48%. Besides picking runes on Illaoi you should learn how to play Illaoi and if you are interested in pro matches take a look on how a pro builds Illaoi. If you want to discuss 
Illaoi then you should visit the champion subreddit.
Illaoi runes from primary path
Resolve empowers the survivability of Illaoi and increases the tankiness. Most of high elo players – and our LoL pros in the the major regions – have agreed that 
Grasp of the Undying is the best keystone rune to run on Illaoi. This keystone rune gives Illaoi alot of sustain and helps to force your opposing champion out of the lane. Other primary runes on Illaoi are 
Demolish, 
Second Wind and 
Revitalize.
Demolish increases your pressure on the enemy turrets. This rune will help you to punish bad roams or backtimings of your lane opponent. Second Wind powers up your sustainablity in lane by healing after taking damage from an enemy champion. Revitalize inceases heals and shields you distribute or receive.
Illaoi runes from secondary path
When it comes to your secondary path, most Illaoi players prefer to go with Inspiration. Inspiration opens creative opportunities on Illaoi troughout the match. On the Inspiration path, the best runes for Illaoi are Cosmic Insight and Biscuit Delivery.
Cosmic Insight grants summoner spell and item haste. Biscuit Delivery is a great rune for laning as it gives additional health and mana, which can help in more aggressive lanes.
FAQ for Illaoi Runes
Which is the best keystone rune on Illaoi?
The best keystone rune on Illaoi is Grasp of the Undying. This Illaoi runes setup is then referred as Illaoi Grasp of the Undying.
What runes does Illaoi use?
Runes from the paths Resolve and Inspiration are the most used runes on Illaoi. For the exact pick rates of Illaoi runes used, you have to study the rune distribution presented.