Imp kick = 3 seconds
Glyphed Garrote = 5 seconds
And if you happen to be a BE like me, AT = another 2 seconds
thats 10 seconds of silence on an opposing teams healer with a mage and a rogue railing on them. the only issue with this though will be if the other team has smart ccers but to counterract this mage can poly the one non healer and the rogue can sap the other.