User blog comment:Gnomeco/Katarina - Should be buffed?/@comment-24792363-20140417193439/@comment-24792363-20140417193625

Also many ccs have hefty cooldowns, and having your ult off cooldown is intimidating, and would likely result in their saving their cc; they might also blow this cc, which would then be the perfect opportunity to use your ult as they would lack a counter.