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Heimerdinger Build Guide by RawrNinjas
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If you have played Heimerdinger before you will know that he is frequently OOM (out of mana), so using Great Seal of Clarity will give you a fair amount of Mana Regen that you will need to keep the fight going when it is at its worse with its +0.065 mana regen per level which comes out to be 1.17 mana/ 5sec @ level 18.
As always, he who uses his abilities wisely or most often shall win the fight!.. So the use of Greater Glyph of Focus gives you the chance to have a much better CD (cooldown) rate which allows you to get that good push going and a frequent series of stuns. Greater Glyph of Focus give you a very useful +0.65 CD reduction.
With the Quintessence I used three different Runes to help give a wide variety of bonuses that can be very useful.
As everyone can tell, Heimerdinger is EXTREMELY slow early game, and most of the mid and late game also. So I have chosen Greater Quintessence of Swiftness to give him that shove on his way to a good sprint. This Quintessence gives Heimerdinger +1.5 Movement Speed.
Greater Quintessence of Wisdom is a simple win within itself. Heimerdinger is going to be getting ALOT of minion kills due to his turrets. So a nice little boast in exp. is fantastic. Greater Quintessence of Wisdom gives Heimerdinger +2% exp. gained.
And the final Greater Quintessence I chose to use is the Quintessence of Celerity. This is once again a great CD Reduction and I believe that Heimerdinger's stun can be very useful and this will give it more capabilities to be used in team fights with a 2.34 CD Reduction at level 18.
The lifesteal is that extra little treat that I added to give you that chance to stay alive in team battles. But i highly doubt you will have a game that lasts long enough for you to get Hextech.
Flash gives you that chance to jump over walls or to chase down that annoying guy who is running away and you just want to stun and get him for that nice ks. Flash is going to be amazing if used right.