User blog comment:Alartan/Cooldown reduction is love, cooldown reduction is life!/@comment-3466579-20150302162927

Cooldown reduction is a useful stat and all, but honestly its effectiveness heavily depends on each champion, role, matchup.

The biggest issue related with increasing CDR is the increased resource stress. 40% reduced cooldowns means 40% increased resource usage. One can say: "Hey, you don't need to spam your skills on cooldown" - "Then i don't need that cooldown reduction".

It is true that CDR may be worth just to have the chance to use a skill 40% more often, but again, this is not always true. It doesn't matter if Rocket Grab has 3, 4 or 6 seconds lower cooldown: if you land it, the opponents will either be dead or in need to recall.

Ebb and Flow may save a life thanks to a 40% lower cooldown.