Without further ado, I present to you, my dear readers, my excellent Kassadin guide. I put a fair amount of effort into this guide, so I do implore you to reconsider any downvotes pending the actual trial and testing of my guide that I imagine you are planning to do. And above all, thank you for taking the time to read this Good Kassadin Guide.

+Very good nuker

-Squishy

+3 sec flash

-Needs ult stacked for damage

+Easy harassment

-Focused

http://www.mobafire.com/league-of-legends/rune-page-planner#&rune=338:3-351:9-254:9-309:9


More early game damage

Avoid mana problems

More damage late game

More damage early game

Viable summoner spells
Flash+ Riftwalk = good nuke(u can use Flash instead of Riftwalk while Riftwalk is stacked and make of it a very good nuke), chase & escape

Ignite u need it all mages need it u ll cry when u see champions running with no hp and u cant Riftwalk + Null Sphere because u are oom but with Ignite they wont be able to run
Cleanse+ Riftwalk= if they focus u Cleanse and Riftwalk out

Teleport u can chase with it and u would need it sometimes when u are getting harassed

Non viable summoner spells
Clairvoyance u don't need tell the support to get it

Exhaust u got a ******ed slow and u cant ult out from melee champions range

Fortify the tank can get it u don't need it

Ghost so u got Flash and another Flash with 3 secs cooldown u don't need it

Rally just don't

Smite Lol are u serious only for troll mages and saintvicious Xerath

Revive trolls and jungler Evelynn

Kassadin takes 15% reduced magic damage after magic resistance reductions has been applied. Kassadin converts each point of this ignored damage into 1% bonus attack speed. Each of these conversions last individually for 4 seconds and may stack for the time this duration converges. It makes u less squishy vs mages and can save u from ******ed champions ults like LeBlanc and Karthus

Kassadin fires a void bolt dealing 80 / 130 / 180 / 230 / 280 (+70% of ability power) magic damage and silencing the target for 1 / 1.4 / 1.8 / 2.2 / 2.6 seconds. ******ed silence + Force Pulse and Riftwalk u can harass hard

Passive: Kassadin's melee attacks draw energy from the void, restoring 8 / 11 / 14 / 17 / 20 mana each hit. If this effect is triggered from attacking a champion the amount of mana restored is tripled.

Active: Kassadin's normal attacks become charged, dealing 30 / 45 / 60 / 75 / 90 (+15% of ability power) bonus magic damage for 5 seconds. Restore mana = more harass, ap damage per hit = more damage late game.

Kassadin draws energy from spells cast in his vicinity, gaining a charge whenever a spell is cast near him. Upon reaching 6 charges, Kassadin can use Force Pulse to deal 60 / 115 / 170 / 225 / 280 (+70% of ability power) magic damage and slow enemies by 30 / 35 / 40 / 45 / 50% in a cone in front of him for 3 seconds.Very good slow and it stacks with rilay.

Kassadin teleports to a nearby location dealing 60 / 90 / 120 (+50% of ability power) magic damage to surrounding enemy units. Additionally, each subsequent Riftwalk in the next 7 seconds costs 100 additional mana and deals 60 / 90 / 120 additional damage. The cost and damage can stack up to 10 times. The best ult ever u can chase with it, u can run with it, u can nuke with it, and u can feel like a ninja with it, it is just fantastic.

Will add a video soon
More harass u can get Nether Blade at level 4 or level 8 if u got mana problems

U can start with Boots or a Sapphire Crystal

Rush for
80 Ability Power, 630 Health, 725 Mana. Passive: Your Champion gains 18 Health, 20 Mana, and 2 Ability Power every 1 min. Bonuses cap at +180 Health, +200 Mana and +20 Ability Power. (Already included in item statistics) UNIQUE Passive: Upon leveling up, restores 250 health and 200 mana over 8 seconds. 630 hp for counter those squishy problems 725 mana for mana problems and 80 ability power for early~mid game damage.

now we go for
20 Magic Penetration. UNIQUE Passive: Enhanced Movement 2. we get it for early~mid game damage.

and for finish our core
140 Ability Power. UNIQUE Passive: Increased ability power by 30%. with this item we can full nuke dps ranged champions at lvl 11~16 with 4 stacks on Riftwalk, Null Sphere and Force Pulse

After we get our core we can go for:

80 Ability Power, 350 Mana, 30 Magic Resist, 7 Movement Speed. UNIQUE Passive: When you use an ability, your next physical attack will deal an additional 100% of your Ability Power in damage. This effect has a 2 second cooldown. With this item we make our nuke more powerful don't get it if the enemy team is building def.


20 Ability Power. UNIQUE Passive: Your champion gains 8 ability power per stack, receiving 2 stacks for a kill or 1 stack for an assist. This effect can stack 20 times; you lose a third of your stacks if you die. At 20 stacks, your champion's cooldowns are reduced by 15%.Get it if u are doing good i don't recommend it because mejai=focus


70 Ability Power. UNIQUE Passive: +40% Magic Penetration. Get it if the enemy team got 120+ magic resist if they got less get abysscal scepter


70 Ability Power, 57 Magic Resist. UNIQUE Aura: Reduces the Magic Resist of nearby enemy champions by 20.For enemies with 100 or less magic resist

if we need health def or magic resist before damage get these items


80 Ability Power, 500 Health. UNIQUE Passive: Your spell damage will slow the target's movement speed by 35% for 1.5 seconds (15% for multi-target spells and damage-over-time spells).This item gives more health and more ability power and it makes your slow more ******ed.


68 Armor, 38 Magic Resist. UNIQUE Passive: Revives your Champion upon death, restoring 750 Health and 375 Mana. This effect can only occur once every 5 minutes.Revive and Riftwalk out YES, this item gives armor and more magic resist you ll reduce 50% of both damage and magic damage.


56 Magic Resist. Active: (Unique) Removes all debuffs from your champion. 90 second cooldown.
get this item if the enemy team got a lot of cc and u didn't get Cleanse

Farm and harass till lvl 7 then ask ur jungler
if u can get blue buff if u got it go and gank top or bottom lane or go mid and harass with Riftwalk+ Null Sphere + Force Pulse u need 4 stacks on Force Pulse to do it

so now u should be lvl 11 get blue buff again and gank with 4 stacks on Riftwalk u ll be able to do 1200 damage with a full nuke without Ignite

Team fights
Stay back and stack rift walk tell the tank to initiate when u got 3/4/5 stacks then go for the dps ranged carry of the enemy team and full nuke him now run away and spam Null Sphere with Force Pulse

Kassadin is a very good champion even u will sometimes trying to use him Riftwalk for chase or escape.

Upvote if you liked the guide, and only downvote if you feel it is absolutely necessary. If you do downvote, please inform me of why, and perhaps I can rectify any mistakes I have made.

Get fun chasing and making ur enemies tell u Kassadin is op