More about the Warlock being confused as to why the Paladin knows the language of demons (which is a sound tactical ability in my opinion, know you enemy and all that)
Depends on the lore of the demons it was learned from.
What did the paladin offer for this knowledge? How does that impact their oath?
That being said, I'm sure there are plenty of ~~nerds~~ wizards or other scholars who could teach it.
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More about the Warlock being confused as to why the Paladin knows the language of demons (which is a sound tactical ability in my opinion, know you enemy and all that)
Depends on the lore of the demons it was learned from.
What did the paladin offer for this knowledge? How does that impact their oath?
That being said, I'm sure there are plenty of ~~nerds~~ wizards or other scholars who could teach it.