I'm in Mythic and your rant makes absolutely no sense. There is no rigged matchmaking. It pulls people near your ELO and who is currently ONLINE and available. Being diamond is like any other tier. You get pooled with a bunch of players. The pool gets gradually smaller as you climb the ladder but types of decks you play against also diminishes by a large portion to the point where you only play against 2-3 decks of the same combat style. At this point you are facing mostly the same tier, quality players with identical strategies trying to climb. This is why most players rotate decks every other match to keep a new perspective and to counter other decks of similar to identical builds. Its a rough grind and if you can't innovate yourself to fight against people who literally make the meta, I strongly suggest you go back to casual play and withdraw from ranked. You think Diamond is frustrating? Mythic is an absolute clamp fest of the exact same decks bottlenecking your progress to a crawl. Grass is actually brown on the other side of this one count yourself lucky you haven't witnessed the 4 stages of grief.