Talk:Summoner spell/@comment-4824704-20151103234847/@comment-27265960-20151122184154

I have just tested all of that.

First, note that the reductions from Lucidity and Enchantment 'Distorsion' do not stack. If you take both, Distorsion will be applied and the 10% from Lucidity will be ignored.

Results are strange though :

Lucidity Reduction and mastery Insight stack ADDITIVELY : e.g. Flash' CD goes down to 225s. (300 * 0.75).

Distorsion Reduction and mastery Insight stack MULTIPLICATIVELY : e.g Flash' CD goes down to 217s. (300 * 0.85 * 0.90).