Talk:Lissandra/@comment-25122281-20150201002249

Which boots do you build on her? I checked probuilds.net and it varies, but it seems that pros slightly prefer Ionian Boots of Lucidity. I did some calculations and it seems that, provided you have 25% cooldown reduction, that additional 15% increases your damage more than 15 magic penetration (not only on Lissandra, but in general)*. And obviously the more cc you have, the more you benefit from CDR.


 * If you have 25% CDR, you dps is increased by 33% (e.g. you can spam 4 spells in the same time as you would cast 3 spells with 0% CDR). With 60% it's 67% more damage. So that additional 15% CDR gives about 25% more dps. Flat magic pen is better the less magic resist the target has (but no less than 15, obviously). At 15 MR it gives 15% more damage. At 200 MR it's 6% increase.

It seems that magic penetration is better for burst, whereas cooldown reduction gives more sustained damage and utility. But which one is preferable for Lissandra?