Dragon Control Warrior... Interesting.
I'm on the fence as to whether Ysera or Nefarious is better. Very rarely do I play either card and it stays alive for the next turn. So on that front, I value 2 opponent spell cards over 1 dream card. While Ysera isn't BGH-able, it still dies to typical removal (Siphon Soul, execute, a decent shield slam, assasinate), and it's Shrinkmeister Cabalable which is scary.
Idfk. It's tough. Sometimes you play a paladin and get eye for an eye and sometimes you get equality and it outright wins you the game with Baron Geddon combo.