We've got some late changes for the Frost Queen's line right at the end of the 7.18 cycle I though it would be good to give some more context on. We want to put a bit of power into the FQ's line of items, given they're underperforming relative to Coin/Targon's even on aggressive champs who should be much more drawn to FQs. We also want to offer non direct damage power where possible, both to reduce creep on number of high threat damage dealers on a team and to allow differences in how champs play in different positions (mid versus support for a number of mages). That meant adding AP or additional proc damage was something we wanted to try and avoid. CDR's is somewhat better approach as a result, focusing champs more on frequent casts (more sustained damage, more utility uptime). There are some cases where that contributes to CDR glut on some champs, most of the core FQ's users however are often buying non CDR items regardless however (e.g. Rylai's and/or Liandries).
We added CDR to T1, T2 and T3 of the Frost Queen's line as a result. We then started running seeing some mid laners swapping to it. Flexibility of item use across positions isn't in and of itself a problem, in this case it looked like it was at risk of making some champs (e.g. Cass) potentially too dominant. We made some late changes to FQ's as a result, uping the CD on minion kills by a couple of seconds and changing it so it gets extra CDR at T2 (now 10%), but doesn't increase further at T3. Intent there is that it's a better choice for supports building it and then going for other items, without pushing it to T3, without being too warping if picked up by others. Making it a support item that you're happier leaving at T2 also then gives a bit of extra distinction versus Targon's/Coin potentially too.
