Sheep's Legend Aggro Shaman (Season 31)

These are the cards you will ALWAYS want, no matter the matchup (except a cornercase for Finley).

Tips:

1. Keep in mind not to keep too many 1-drops though. The priority of 1-drops goes as follows: Trogg, Squire, Finley (He's most important later in the game, since you may actually want some totems early for utility and TFB, so if you have another 1 drop, don't keep him. Also don't keep Finley vs classes that play aggressively like hunter, but those are pretty rare).
2. In the past, Coin-->Totem Golem-->Trogg was the correct play vs other aggressive decks, but with the loss of Rockbiter Weapon and Abusive Sergeant, Trogg is now the correct play unless the opponent has up a Spirit Claws, Flame Imp or Mana Wyrm.
   

   
   

These help control the board. By "Aggro", I mean Warlocks and Shamans, not Hunters. Vs Mage, just keep bolt, as the other 2 cards are not nearly as useful.

If it's Control Warrior, just play fast and hold back most of your fatties until they brawl. If you have the opportunity to comfortably leave them at 14 health instead of 12 or 13, try to do that as to play around Revenge. Priest is ok, so just ignore their stuff until they drop Priest of the Feast, in which case you MUST kill it. Using Hex early vs. priests is also good, since it ruins their resurrections for the rest of the game. Keep in mind, vs Paladins make sure not to overextend into a T2 Doomsayer, as that can lose you a game if you aren't carefu, so Bolt is actually ok vs Paladins if the rest of your hand is SUPER aggresive.