Considering how much of a safe pick Greymane has been for many months, Blizzard are finally neutering one aspect of his kit: camp clear. With Razor Swipe having its cooldown increased by 1 second, camps are a little bit tougher to cut through. Where other Heroes are concerned, Valla received a buff to Multishot, Maiev was well and truly nerfed again while Thrall's Crash Lightning was also nerfed (just as he was getting good). Finally, Artanis had his mana costs lowered, while Blaze received mandatory tweaks to Bunker. Full notes here.