"10 second cooldown. 2.5 second 50% slow. 7.5 seconds of downtime.
Itemization aside, that's the skill you are talking about buffing on Skarner."
© 2014 Riot Games, Inc. All rights reserved. Riot Games, League of Legends and PvP.net are trademarks, services marks, or registered trademarks of Riot Games, Inc.