User blog comment:DeMi189/Katarina guide - Why? Because I can!/@comment-58.172.169.27-20120904154250/@comment-4717259-20120906143636

WoTA is really good on her. However, Gunblade is better IF you're doing ok. 1. It has a really good passive that Katarina makes good use of. 2. It gives AD. 3. Gives almost the same AP as WoTA. 4. Lifesteal is always good, if you detonate Q with an autoattack, you'll get even more HP back. But, if you're doing really bad and behind, WoTA is cheaper and suits better.