Talk:Zed/Strategy/@comment-2179912-20130427231525/@comment-6796114-20130621192856

The active adds extra burst damage to his Death Mark pop and allows him to stay closer to his target with the slow of it, the Life Steal and Attack Damage are good sustain stats and the attack speed allows him to autoattack more to do extra damage and take down turrets quickly.

The reason so many pro players build it quickly as once it's complete the active gives him extra mid game burst and most Zed players split push often as he can beat most champions that come to try and stop him, forcing opponents to send more than one champion, making easy objective taking for allies.