Removal dragon priest

I made this deck some days ago and I like it very much. It's still not good against aggro decks. There are only two removal <span>Duskbreaker</span>s against them. <span>Ragnaros the Firelord</span> or <span>Obsidian Statue</span> is a good combo with <span>Mirage Caller</span>s. The main problem with them, they aren't playable in one turn together. I have to find another max 7 cost card for copying. I'm going to replace one <span>Mirage Caller</span> with a <span>Faceless Manipulator</span> but I have to earn dust to craft it. I'm looking forward to your opinion how could be the deck better.