User blog comment:HoukaiEU/Delilah, The Hextech Disciple/@comment-6611681-20130617133436/@comment-1330314-20130618041247

The problem with Delilah's ult isn't about its size so much as that it offers no counterplay. Other global ults let the enemy fight back somehow: 's ultimate is randomly distributed and thus unreliable as an execute, whereas 's ult has a three-second delay, allowing enemies to counter it with a heal, a shield or an ability that makes them untargetable. Your ult deals a large amount of damage instantly and can follow its enemy, effectively nullifying any possibility of escape. You need some kind of range restriction on it.

You misunderstand me on the subject of her Q: I'm not saying Runaan's affects her passive, I'm saying the passive on your Q is essentially a free Runaan's from the start. With the two, you could theoretically apply 4 stacks of in a single hit on three different champions at a time, and 3 on the other two. You also need to look at the AD bonus on 's W: he can start with a bonus 5%, Delilah can start with a bonus 12% AD. With the enhanced passive, she literally multiplies the on-hit effects she can apply to crazy levels. You need to make the AD scaling start lower and increase with rank, and you need some sort of cap on the effectiveness of its enhanced component to prevent it from getting too crazy powerful.