Legend of the Paladin
Well, he can get involved in someone else's tribulation and cause the difficulty to increase, but surviving it won't effect his own realm unless his own tribulation was due and fused with the other person's. In which case the effects will be even worse. That's how I understand it for anyone wondering. Now all we need is for the Fairy to drive straight into the tribulation out of control and for Dharma King Creation to decide to provide background music and the stage will be perfect!