Did they nerf Sion?

Sion has been resilient in both solo queue and pro play for a long time, so we're weakening some of his reliable early lane power and resource access without decimating his core tank fantasy.

• > Q - Decimating Smash · Min Damage: 40 / 60 / 80 / 100 / 120 ⇒ 30 / 45 / 60 / 75 / 90
• > W - Soul Furnace · Mana: 65 / 70 / 75 / 80 / 85 ⇒ 75 / 80 / 85 / 90 / 95