ARAM + CD Boots + Summoner Spells

Repro steps: Get in an ARAM match with any two summoner spells Buy CD boots

Pretty straightforward. What's the bug, you ask? Well, the stated effect of reducing the cooldown of summoner spells by 10% is technically working... but it's reducing summoner spells by 10% of their old cooldowns (that is, pre-6.12). Flash's cooldown goes from 180 to 150, for example.

I very briefly considered not posting this bug because it's delightfully exploitable, but I'd much rather see a bug-free game than have a slight advantage. :)