User blog comment:Zambu/Useless passives/@comment-4593717-20130502150634

All passives are there for a reason. Some passives will be better or worse based upon the overall ability of the champion to function without their passive.

Ahri - Gives her sustain Akali - Givers her sustain. Alistar - Adds damage to him and gives him a way to get deeper into the enemy team. Ammumu - Makes him do more damage, causing him to be focused. Anivia - Makes killing her not a perfect solution. Annie - Makes her better overall, giving her CC. Ashe - This is awful and I cannot justify it. Blitz - Makes him live forever. Brand - DoT allowing him to get kills easier. Synergizes with his other skills by adding effects. Cait - More damage. Cass - Mana sustain, synergizes with spammy skills Cho - Sustain Corki - Damage Darius - See Brand. Diana - Makes melee viable on her Mundo - Sustain for his costs. Draven - See first half of Brand. Elise - Makes her ultimate work. Evelynn - Allows her to assassinate. Ez - Makes landing skill shots very rewarding. Fid - Damage. Fiora - Poor excuse for sustain. Fizz - Makes mobility easier.

I'll add to this.