Starlium Scythe vs Concentrated Energy for Cyclops

My build goes:

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Magic Boots, Talisman, Genius Wand, Scythe, Holy Crystal and Divine Glaive

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I was wondering if replacing the scythe with CE is better for cyclops. I'm aware that Cyclops needs a lot of lifeateal for sustain, but I already use the fighter emblem and Festival of Blood for spell vamp, plus the +8 lifesteal in SC. I like CE's passive more, but SC does have Cooldown Reduction as well. What do you guys think? Right now I'm leaning a little towards the scythe, but I'm still not 100% sold.