NO NO NO, build shoes at the beginning and DONT you dare to buy a lichbane! if you are in autoattackrange to an enemy you are dead, nothing else!
besides, if you do not play blindpick you are always useless and dead as a kassadin. in the 10% where kassa is not banned he is countered to 90%, recently i played against GP who was awkward, and a pantheon or a xerath(!!) is also your death. even a melee, like garen can shut you down. and how do you get the idea that you can use lichbane sucessfully with a glasscannon build?

+1

However, there are many things I would like to comment upon.

Your runes. Potency seals do nothing, NOTHING. Get either vitality for the hp, or mana regen, replenishment.

As for your items, you need to build a defensive item like Rod of Ages or rylai’s crystal sceptor. Do not buy archangel’s staff so early, remember that the stacks on tear of the goddess transfer to the stacks on archangel’s staff, and buying archangel’s early means it is less cost efficient.

I see you know how to use color coding, but here’s another kind of coding. In order to say Kassadin like that, type this is: Now use this some more, it will make your guide look better. Also, to make an icon, like , do this: You can adjust the size to your liking!

Good luck!

On Kassadin, and actually most mids, I start with boots and pots. Especially when you're up against a skillshot champion. Then maybe consider a couple of dorans. +1 anyway :)

+1 Good start!

overall, I enjoyed the color coding you did for your guide. However, pictures will be needed and a better layout. For instructions, check out jhoijhoi’s guide on making a guide. I really think that getting a catalyst the protector early on will help much more rather than getting it late just for the sake of a banshee’s veil. Since you already added the elixir of brilliance, you might as well add the other elixirs. Talk about lane matchups and turn on require comment to vote.

Keep up the good work!