when fossil comes out i think many types of decks are going to be done for
but  new decks are going to be made
 
Raindance will run into trouble becuz of aerodactyle muk wont hurt it as much
because blasoise is still powerfull and so is gyrados and artticuno but it
will get help in the form of lapras and aticuno u might say that lapras sux
but his confuse ray is a way around muk and aerodactyle 

Haymaker get no help whatsoever not even hitmolee i think people would much
rather use hitmochan it will also run in to trouble because of the new gastly
line but what i hate is that after fossil it will probably be the most
powerful deck because muk and aerodactly have no effect on them
 
Damage swap will almost be elimanted because of muk and aerodactyle

New decks will also pop up such psychic decks  to kill haymakers a dek that i
will be using it utlized around strong psychic pokemon  jynx kadabra no
a\akazam  gengar but i will use haunter because his power is too good not to
risk it becuz of muk even drowezz becuz of confuse ray and it doesnt rely on
evolutions u can just use jynx

also new deck revolving around muk and aerodactyle to kill  all decks with
evolutions and pokemon powers