Worry not Darius mains! It still gonna be okay!
Just take Fervor of Battle if they nerf passive and CotC. It lasts 6 seconds which is longer than noxian might, in 95% scenario you'll have it stacked at the same moment with noxian might. (Just do aa + w and couple autos. It takes the same amount of time to trigger passive) 40 dmg FoB (at lvl 11) + 50 dmg BC + 80 dmg passive (lvl 11). I think 10 dmg nerf on passive is easily replaced by this lil' thing.