Talk:Vi/@comment-143.88.0.213-20121213002434/@comment-5523473-20121213054620

^ In fact, she actually does give up an active ability for this passive - many ability passives come with an active component -  Jax's ult, Nocturne's W, Darius' E, Zyra's W, Zed's W - thus those passives are largely one-dimensional, here being bonus damage, attack speed, armor pen, CDR, and AD respectively.

Passives that do not have an active in the same slot, such as Vayne's W (and maybe TF's E) tend to be more than one-dimensional as they do not have an active component, and thus need to be stronger for the champion to keep up with other champs with 4 active abilities.