It's the nerf we all coming a mile away. Small Bucc is finally nerfed after unleashing a reign of terror since the Mean Streets Expansion was released. The card was included in multiple decks and was dominant on the ladder.

The Pirate 'package' of Small-Time Buccaneer and Patches the Pirate is played in about 50% of all decks at rank 5 and above. - Ben Brode (Source)

Spirit Claws is also getting the nerf boot. This was a card that propelled Shaman to god tier. This card synergy with so many cards in a shaman deck such as Small Bucc and Azure Drake. Small Bucc in particular was really tough to deal with since Shaman could dish out enough damage to take out a turn 2 doomsayer.

These nerfs come just in time for a possible announcement of a new expansion. Hopefully in the time between the nerfs and the expansion, there won't be an even crazier deck that will destroy the ladder the way Midrange Shaman did after Blizzard nerfed execute and molten giant in after One Night in Karazhan was released.