Here a picture of the rank with shamans: https://ibb.co/frWh2TJ

The ladder now is really weird, the best deck is by far Jaski but is get under control by humans wich have a really really godd matchup versus control in general so my metagame call is Shamans easy right? Absolutly farm all the aggro deck like humans we don't care about thalia and sentinel or board presence Shaman ALWAYS GO MORE WILD than all the other decks (maybe elf have a chance but post board we have burn spell elf does not). If the meta change again and jaski become again popular forget about shaman just can't beat wrath and helix this is why i maindeck sideboard cards for this matchup like chandra and Klothys. The build is straight forward just the best shamans and CoCo, i wish i can play less than 60 cards because i try every other shaman like Fauna Shaman and judith (the first is slow and is better in a combo deck the second is fine but the splash is not worth you have to give up manlands and you need them) but no one perform well so just fill with sideboard cards for the bad matchup and an Harvest. Sideboard is the nice part reclamation sage is great for Food, loaming shaman is a nice way to answer greveyard problem and goblin ruinblaster is usefull in matchup like Niv ,Cascade or just for other matchup if you need to buy time (destroy multiple lands is insane) and the best part is all this cards are shamans and you can coco into them. Creativity is another bad matchup but you have a lot of answer for the angel like: akroan war run afoul or just bone crusher face so damage can be dealt (he need 3 calls to stay face istant creature and enchantment), if this deck become popular again i suggest to maindeck the giant 2x fine in the matchup and good versus aggro decks. 

So if you don't like aggro decks like me maybe you better try this because is really funny and can change your mind , be able to double the trigger is great this is why Shamans is in my opinion the best CoCo Shell and a great metagame call right now.

Suggestions:

Sometimes You better CoCo in the mainphase you can hit BT of forger for an attack

Fast and Wild is the way if a 7card hand have no fast start just mulligan this deck can grind thanks to seasoned pyromancer  but a turn 4/5 kill is what you want is your opponent responsability to slow you down and play a lategame match

If you have mana open and seasoned pyromancer enter the field with harmonic prodigy hold full control you can cast istant between triggers