Now is the perfect time to buff Clarity (the summoner spell)
With the mana regen item nerfs, champions are having a great deal of trouble making it through lane, when they have to fight people like Akali, Zed, Yasuo, and Katarina, who have not been hurt my the regen nerfs. Potentially, we could fix this by buffing clarity so that champions who have mana issues will actually want it. By taking clarity instead of ignite or exhaust, they have a meaningful weakness that the lane opponent can play around.