(THIS BUILD DOES NOT assure victory, because that is highly dependent on your team, but if you are a skilled player and follow this build, you will dominate).Kassadin is a fairly difficult champion to play being that he is a melee mage and is squishy as fresh poop, but he can deal out alot of damage in a very very short period of time. This champion requires kiting in order to survive most situations(moving back and forth out of the fight) to be effective. It may take some time to learn to play him if you don't play him often, so i'll go over a few things about him in this guide to hopefully lessen your workload.
Pros / Cons
Skill allows flash every few seconds Riftwalk
Silence Nuke Null Sphere
Multi Target slow Force Pulse
Masteries are to maximize mana regen and cooldown reduction while adding as much damage output as possible with a 9/0/21 tree. Mana regen on kassadin is a crucial part of playing him successfully. Without mana, he's useless so i feel that this mastery setup is non-negotiable.
To increase that early game damage and help get you some quick kills
To aid you in staying in the lane for a longer period of time
Starting towards your first full item, adding some ability power, and spellvamp to keep you in the fight.
For that movement speed that everyone always needs, and magic penetration, since your a mage after all.
Will of the Ancients
Another increase in ability power and spell vamp, with an aura that your whole team can use. Underused item on kassadin in my opinion.
Catalyst the Protector
To help address Kassadin's mana dependency and give you some extra hp to increase your survivability.
Increase your ability power and start towards your next full item.
Greatly increases ability power and mana to address 2 of kassadin's most important attributes. This item is a must on kassadin.
A small increase in Mana (thanks shrubninja) and ability power with an awesome passive. Due to kassadins low cooldowns, this item helps to deal out alot more damage in your bursts.
In my opinion, one of the best items on kassadin. An increase in magic resistance, large increase in ability power, and a passive that cant be matched. This item is groundbreaking when it comes to your damage output.
To give you some much needed survivability and a passive that could potentially save your life.
A huge burst in ability power to top things off. If the situation calls for a different item, this item can be swapped for one of more importance.
This build should give kassadin a great amount of damage output, and a sufficient amount of mana to continue that damage output. Remember that kassadin is not an easy champion to play, and that he is one of the squishier champions in the game. Doing your best to stay out of the mess in team fights and as far away as possible from enemy champions is crucial to playing a successful kassadin. I hope you enjoyed this build, good luck, and have fun. Feedback is much appreciated, But i encourage you to try this build before commenting.
If you liked this guide, check out my others if your interested.