I think all these Pokemon are vital to the metagame. 
Mismagius: Blocks Rapid Spin and therefore makes Stall more viable, while also being able to switch in on Fighting-type attacks that beat so many of the common walls.
Shaymin: Beats bulky waters. Water-types would be hell if this thing was gone.
Clefable: Makes the Stall that Mismagius promotes beatable, but is beatable itself.
There's a real balance going on, and I personally like it.
				
			Mismagius: Blocks Rapid Spin and therefore makes Stall more viable, while also being able to switch in on Fighting-type attacks that beat so many of the common walls.
Shaymin: Beats bulky waters. Water-types would be hell if this thing was gone.
Clefable: Makes the Stall that Mismagius promotes beatable, but is beatable itself.
There's a real balance going on, and I personally like it.
 
 
		

 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		


 
 
		 
 
		 
 
		 
 
		 
 
		



 
 
		 
 
		


 
 
		 
 
		 
 
		 
 
		