Clarity buff; Decrease cooldowns upon use
Clarity, most people won't have used this summoner spell in years. It refreshes mana, which is a good thing - one however rarely gets into a situation where you suddenly need a vast amount of it. For lane sustain teleport seems to be a much better choice.
I thought of ways to improve Clarity. Making it refresh your cooldown by a certain amount feels like a fitting feature. I started by considering a flat number, but it soon would become clear that this would be broken (Annie....).
However reducing your non-ultimate cooldowns by a flat percentage feels like a fitting incentive to take this spell. I'ld suggest 14 +2*level % of each non-ultimates cooldown AFTER normal cooldown reduction is applied.