Talk:Katarina/@comment-220.255.1.145-20111201101255/@comment-3486816-20111205184738

AD costs about 36 gold per point, whereas AP costs about 20. AD is better for increasing the damage from her ult until you get a deathcap, but you'll usually have some wasted Utility from AD items; it's better to get an item like Rylai's, which applies on spell effects, than an item like infinity edge, where the crit damage and crit chance are almost entirely wasted.