User blog comment:Zambu/Useless passives/@comment-8468980-20130502064022

Champ kits are sometimes designed with token passives tacked on simply because players desire them. Zyra's and Kog's are super powerful but their kits stand alone as is, they even get free stats from abilities as secondary passives.

I would rate Sion's and arguably Syndra's as probably the two worst passives. Sion's does so little for him. While syndra's enhances each ability, they require maxed out spells and even then are rather underwhelming.