@Meddler: You didn't revert all of the April Fool's changes yet.

Katarina's cooldown changes and Jinx's W crit were removed from PBE.

But Lux's 30%/40%/50% cooldown refund on her ultimate if it kills an enemy champion and nerfs that would dumpster Camille are still on PBE. Meanwhile, Camille fell to 45% winrate.

Riot themselves said Camille was in a good spot.