Originally Posted by
Razion
Original DK units do have an old description that reads 'immunity to disease of any kind', and yet we see Paladins like Bridenbrad were victims of the Plague. Given that the Paladins in the DK unit text had been shunned by society as being perceived infected by the Plague, and also that they were corrupted on the way to the Frozen Throne and accepted the power at that point, I think it's fair to say that their perceived immunity to disease was false in the face of the Plague, that the Paladins thought themselves immune to the Plague but weren't as the citizens saw, and that that's what actually ended up corrupting them along their long crusade (tale of hubris). We know that the Plague has mind-rotting capabilities, that the citizens noticed their corruption, and that they got worse over time as if they were slowly succumbing to corruption (getting more resentful of the citizen's claims, presumably). We know also that Paladins can't directly cure the Plague when others are infected. Again, in Bridenbrad's quest we know that not really anything could stop the Plague, and you were only immune to it if you were already Undead. It seems when it comes to Paladins, they can perhaps keep their bodies whole, maybe heal physical damage caused by it, but they can't cleanse it entirely (Plaguelands and Quel'thalas' Scar would be cured, otherwise) or reverse things like the mind-rotting as it would still be a 'whole brain', just changing and different. (Plague being mutating or changing or adaptive in nature isn't unheard of.)
We know from many other examples like Scarlets in Stratholme, of Reanimated Crusaders near Scourgeholme, Zeliek, and more, that Paladins being raised into Undeath isn't uncommon and wielding Light-based abilities also isn't off the table. That much can't be disputed.
But it's a bit interesting with the Gilnean Paladins in regards to DKs. They could have been infected before they left, but under this chain of events eventually falling to madness, wouldn't have made sense for a player DK as they would have been Scourge-aligned and not willing to rebel against Arthas. The Arugal Worgen are unique in that they have the opportunity to have been killed without falling to corruption along the journey, so when the player as a DK turns against Arthas they weren't already corrupted and could turn. I think this plays into the mind-rot state of the Plague, and how necessary it is for a Paladin to have the Plague for a long time before they can be controlled unless they're just being slain and raised. Like we see with Zeliek, perhaps that was one example of a Paladin with a whole mind that could continue to rebel even if his body was under control.
Anyway, in terms of what this says about Worgen Paladins, there isn't actually anything I can find that says Paladins are immune to the Worgen Curse. And at the very least, Priests and Warriors are susceptible and even normal Paladins aren't immune to the Plague either - whether it be from mind-rot or if they're too weak to hold it off from their wounds, or otherwise.