20% CDR will just flesh out a build for a mage so nicely, but make the other 10% UNIQUE Passive Haste so you cannot get 40% CDR from two items and building a second lost chapter item only gives 30% CDR like the other lost chapter items.
Brand, Fiddlesticks, Karthus, Zyra, Nidalee, Elise, Evelynn, etc all can jungle and mana+CDR definitely will help them towards this.
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