User blog comment:Lukeatlook/Pyro's Item Overhaul 7 - The Tank Project/@comment-24420226-20141216024658/@comment-4813965-20141216030215

He can't build more than one of them without going over the CDR cap (he has 10% from Q and usually 10% from masteries).

If anything, Frozen Heart is going to be a bit weaker on him, now with just 10% CDR.