Phantom Dancer on Katarina

No. Katarina doesn't deal much damage at all with her auto attacks and Phantom Dancer provides zero benefit to any of her abilities. She wants to maximize her kill potential and then hop on targets that she can kill too fast for them to fight back.

Phantom dancer?

I think he means for the damage reduction passive and the chasing potential and not the stats.

If you'll ever try AD Kat, then yes, Phantom dancer could be usefull. But AD Kat is much worse then AP. On many champions there are different scalings from AD and AP. Like you can play AP Gangplank or AP tristana, or AD Malzahar. (Ezreal, TF and Kog can be hybrid also). Kat has AD scalings on her W and R too. But it give you so little damage that you will cry. For example 1300 gold - 40 AD. Will give you 150 plain damage on your R. 1250 gold 60 ap will also give you 150 damage on your R. But it will also affect your Q and E. Main problem is that resulting damage will be magical. So if you'll buy or or you get no effect on your skills. No heal, no crit, no AS scaling. If you want to damage tanks - you need to buy instead of .

If you'll try on Malzahar - you'll get enourmous heal from your voidlings because of their damage is mixed, not plain magic. So I wish she had separate damage scaling on her skills.