User blog comment:ClariS/A Moment for Clarity/@comment-3476718-20130416083425

I guess I should be considered a newbie now, since I take Clarity with me every time I play a burst APC.

The reason why I think Clarity is a pretty good spell (and that I use it a LOT) is because of it's incredible mana sustain. During the laning phase, I try to harass my enemies as much as possible, and maybe get a few kills early on. To do that, I need horrendous amounts of mana, which is why I use Clarity the second I go below 50% mana. It's good for keeping your mana in check (and trolling your enemies when they think you're OOM), allowing you to stay in lane much longer than your enemies. Either this or, but the latter costs you a lot early game, and I'm not just referring to gold.

By the time I've used up Clarity and my mana is still low (because I haven't got a kill and thus cannot return to the fountain) I just stick there and wait for it to come off cooldown. is really damn useful because of this.

I also once considered buying 3 s instead of, but that's kinda of a risky tactic.

TL;DR, Clarity makes your useable mana 150% (with the Insight mastery) from its original.

As for your Clarity, 90 seconds cooldown would be awesome. Trolling enemies to the fullest extent.