Its weakness is that it can be negate in Urara, and since it is an effect that activates in the GY (exclusion zone), it is also worth noting that it will be caught in his GY meta such as Called by the Grave
My love for the Pokemon world goes all the way back to 2004
However, as evident throughout this list, just being released in the set Skyridge is enough to bump up the value of a card considerably
That said, if we're in a risky mood, the fastest our deck can pull off the combo is playing Torgaar, Famine Incarnate on Turn 3 (sacrificing a one-drop and either Goblin Instigator or Lazotep Reaver plus the token they make) and then Hidetsugu's Second Rite on Turn 4 to finish the job
There's really only one good way to play Jorn, God of Winter and it isn't particularly fun
Scenario difficulty data is provided by The LotR LCG Quest Companion