Talk:Kassadin/@comment-16494910-20150701112927/@comment-26459891-20150704014710

The point is that Ryze's damage scales with mana (which is easily found in a lot of tanky items), Swain's damage is over time and Rumble's got high base damage, making mpen and health worth on these guys. Whereas Kassadin has very good scalings (210% not counting ultimate), but terrible base damage ( 170 - 140 - 180 is pretty damn bad). Furthermore, his cooldowns aren't that low, so he can't spam a lot either, and hiw E is gated by its need of charges. So full AP is definitely the best way to build him. I usually run him with CDR per level blues + Ionian boots OR CDR per level blues and Athene's (and I get MPen boots if I do so).