I have been playing MTG since the set was known as Portal. Good times and memories...but it was always casual among friends.
Now...after several very long years of playing off and on through out the history of the game....I have been playing competitive standard and Drafts through the Amonkhet and now Ixalan blocks.
Something that seems to elude me is why deck builds are always the same. No matter what the subtype is... mid , aggro, control, I always see 4 of several creatures, 4 of situational removal, a couple of heavy hitters...rinse and repeat.
Of 16+ creatures they are all made up of the same 4 - 6 creatures....and thats it. Why is there no variety? What are you looking for, and why, in your handfull of repeating creatures?
Question: Why do the templates / expectations for deck building almost always follow the above pattern?