Talk:Zed/@comment-4118289-20140925134529/@comment-24290546-20140927115834

Check your energy regen and cooldowns, if you try to spam Q early you'll run out of energy quickly. That's a little like saying "why do X champion's mana costs sum up to less than their total mana pool?" Even though their costs aren't as large as their mana pool, they obviously can still run oom. Energy, generally, is more limiting in a moderate amount of time (10-20 seconds), and mana is more limiting over a long period of time (longer than that).

As for attack speed, partially it's because the items that give it have really good actives you can't pass up (move speed from botrk&ghostblade, dmg from botrk), partially it's due to the stats they give you directly (20 armor pen? yes pls!), and finally the attack speed itself is useful. It'll let you get 1-2 autos in much more quickly during your ult, and the move speed you just got from botrk+gb lets you aa them in the first place