Hmmmm. Cod4..... been a while since I used my trusty R700....
it was in the original its the thign htat silences guys and cuases them to take more damage
http://www.playdota.com/items
second one under arcane sanctum
lol no dude those are the old items but generally for the most part they are the same
here are the new ones
http://www.dota2.com/items/