***PLEASE READ*** DONT FORGET TO WATCH IN HD
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My first Kassadin LoL tutorial, hope you guys enjoy! Any comments or questions please feel free to post them or inbox me. My ingame name is Redmercy, as you can see, so if you want to ask me anything in the game feel free to add me as well! Enjoy! I will also be doing a lot more tutorials so if there is neone specific hero you guys want to see please tell me, else it will probably be Twitch.

Item Build: (Keep in mind this is my general build, feel free to change it around)
Damage Build (My Preferred Build)
1) Sapphire Crystal + 2 pots
2) Tear of the Goddess
3) Mejai Soulstealer
4) Sorcerer Boots
5) Rylais Scepter
6) Archangel Staff
7) Zhonyas
8) Lichbane

Some dmg Some Tankage:
1) Sapphire Crystal + 2 pots
2) Catalyst
3) Mejais Soulstealer
4) Sorcerer Boots
5) Lichbane
6) Banshees
7) Zhonya
8) Abyssal Scepter

More tanky Build:
1) Sapphire Crystal + 2 pots
2) Catalyst
3) Mercurcy Boots
4) Rylais Scepter
5) Banshees
6) Lichbane
7) Zhonya
8) Abyssal Scepter

Skills: by lvl 6 you should have, 3 0 2 1 with the priority going like this:
Null Sphere, Force Pulse, Ulti (lvl 2 at lvl 12), Nether Blade
NOTE: Dont forget that after lvl 6 you can chose if u want to lvl force pulse to lvl 5 first or Null sphere, i choose null sphere

Summoner Spells:
1) Exhaust
2) Ignite

Runes:
Greater Quintessence of Potency
Greater Seal of Clarity
Greater Mark of Potency/Greater Mark of Insight
Greater Glyph of Force

Masteries:
9/0/21