Mordekaiser-- DEVOURER/ BOTRK -- ruining game

I think all of the league community can agree that Mordekaiser's new ability to have a full-strength dragon or enemy champion WITH ITEMS after he kills them is thoroughly broken. I also think there are a lot of players that will agree with the fact that his survivability when focused by the entire enemy team is a little bit broken( or a hell of a lot broken). The devourer / BOTRK combo is absolutely retarted too on another note. Anybody seen vayne solo baron without losing any HP -- and doing it in less than 20 seconds? xin zhao's 2 hit knock ups anybody else's absolutely broken damage output the ability to deal that much damage and still build 3-4 tank items and be unkillable? where is the balance in this