The only Viable way I've found to increase his defense is with the Combo of Armor of December and A Metal Gamin.
That being said. I have put just Armor of December on him, used its push + armor to move him up the board after a quick place with Snowstorm, then had a Silent One follow him around, makes a big ol' Kill him target on him but If Frame for Murder is in the Pool. He's an excellent choice.
MOST players I've played against can't just ignore this "easy" to hit model that packs a nice damage track. So he's going to get killed, you might as well as earn some VP from his death and possible his life.