Idea.

Skill-Player_Spawn-Constant.
Player can slow All players down (including teammates, or not (option)) within a radius of that player. but that player is not effected by his/her own skill.

-Tallon

UPDATED...
Found a link a few min after while browsing skills. : )
http://warcraft-source.com/board/index.php/topic,4438.0.html