does the active on youmouus ghostblade stack? as in I can pop one and then the other to give me mad attack and move speed
No, the active is unique. Ghostblades CDR/Armor pen will stack with Brutalizer though.
The only things a second Youmu gives you are:
-15% crit chance
the rest doesn't work
© 2013 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.