Greetings Summoners, Here you will find all you need to completely destroy the enemy team and carry yours. Kassadin is, in my opinion, the BEST AP carry in the game. His immense burst and high mobility, gives him the ability to completely shut out multiple members of the opposing team.

PROS

HIGH BURST
HIGH MOBILITY
EXCELLENT ESCAPE/ENGAGE TACTICS
INSANE FARM LATE GAME

CONS
TARGETED IN TEAM FIGHTS
SQUISHY
HARD TO MASTER

Kassadin is an excellent farmer both late and early game if you understand how to play him.

Null sphere is your big ability. Depending on how your lane is playing you want to use this ability has either a harass to get to your minions, or as the ability to pick up your last hits.

Kass's Null Sphere hits Extremely hard as soon as you start leveling it up. Because of this Opponents in your lane will be afraid to get hit by it, giving you lane domination. It is however possible That you are playing against tanky Champions and you cannot scare them away from the minions with your Null sphere. In this situation you want to use it as the ability to last hit. stay behind your minion wave and wait until a minion gets low HP, as soon as its a little under half Launch a Null sphere for the quick Gold.
Kassadin is VERY Item dependent and NEEDS farm to do well. picking a Solo or Mid lane as him will greatly increase his effectiveness throught the whole match.

Kassadin must be played as a Hit and Run Champion, his low amount of health and High amount of damage causes him to be high on the target list of the enemy team. Kassadins specialty is jumping in cleaning up a quick kill and getting out fast.

You want to wait for your force pulse to stack, as soon as its ready you engage.
Open with a Rift Walk > Followed by a Null sphere > Followed by a quick Force pulse.
if your Rift walk can get you close enough to the target. follow this Sequence instead.
Rift walk > Null sphere > force pulse > Nether blade (activate) > Auto attack(as many as you can until you begin to get focused) As soon as the other team switches and starts to come after you, Rift walk away. (Rinse and repeat)

____________________________THE JUNGLE_______________________________________

Kassadin in the Jungle.

Kassadins Rift Walk + force pulse makes him very efficient at dominating the jungle around mid - late game. Kassadin can Rift walk into a minion group Force pulse the whole spawn, Activate Nether Blade and Auto Attack/ Null sphere any surviving Creep. Although this is fast its VERY Mana Draining, Picking up a Blue Rune will compensate your mana and allow you to stay out longer.