Let's talk sion and how he's at 7.3% pick rate and 55+% win rate after his 8.3 changes
What happened in 8.3?
Sion's Q - Decimating Smash now correctly refunds its cooldown to 2 seconds when Sion is crowd-controlled during its cast
Fixed a bug where Sion levelling W - Soul Furnace while in his Passive - Glory in Death caused issues with the amount of maximum health Sion gains from killing enemy units
Fixed a bug where the minion targeted by Sion's E - Roar of the Slayer was incorrectly not made invulnerable to minion attacks
I'd like to especially emphasize the first bug fix you see here. This is actually fucking huge, and in my experience, this essentially makes decimating smash INCREDIBLY hard to counterplay since crowd controlling sion out of the channel means he'll be able to use it again almost instantly. This allows him to shove waves incredibly easy and actually can turn the tide in all-ins pretty easily. This change alone was huge enough that riot should have highlighted it in the champ page section of the 8.3 patch notes as opposed to the rarely read bug fixes.
I guess the question now is what nerfs should we give sion? His play rate and win rate skyrocketed in one patch and show no signs of stopping.