Illaoi's E skill is key in lane. Landing E enables powerful trades, but missing it puts you at great risk, so play around it.
She becomes incredibly powerful in a tentacle zone with her ultimate. Try to deny tentacle spawns and avoid her ultimate's area.
Be wary of ganks due to low mobility. Instead of teamfights, focus on split-pushing to pressure opponents effectively.
Stats
Precision + Resolve
Q
W
E
R