Talk:Kassadin/@comment-58.172.169.216-20120207024146/@comment-88.186.19.90-20120210180735

The extra AS makes laning easier, because it brings it up above 1.00 attack per second and when bursting your opponent you don't have to flee like a pussy but actually keep outdamaging him with W. It also indirectly increases your mana regent (equivalent to 8 mana per second or 40mp5) by allowing to hit with W's passive more.

25% CDR is enough to one-shot the cap with approprate runes, that means you can spend the rest of your build focusing instead of running after the blue buff/ionian boots. It also frees up some runes slots for moar AP/Mpen.