Can a player use the contact other plane spell to get a demon's true name?


  • 2
    \$\begingroup\$ Hi, Welcome to RPG.SE! Take the tour if you haven't already. It's usually best to have each post focused on one question so that the answers can be more targetted towards that question. As it stands, there are a lot of questions in this post, although some are related enough that I'd say they're part of the same question. I'd recommend splitting everything after "And another question:" into a new post. It's ok to have multiple posts asking different questions at the same time. I hope you get the answers you're after! \$\endgroup\$
    – NathanS
    Nov 18, 2018 at 15:06
  • \$\begingroup\$ It is still more than one question. Whether you can contact specific or random creatures is one question. If the creature is forced to tell you the truth is a completely different question. Also, similar to your other question, could you please clarify what you didn't understand in the spell description? \$\endgroup\$
    – HellSaint
    Nov 18, 2018 at 18:17
  • \$\begingroup\$ I see it as two different questions for another reason: the headline asks about using the spell "to get a demon's true name" and then your main text asks about asking a demon "its true name". These are different. In the first form, you might be asking another entity besides the demon in question, to tell you the demon's true name. I would give different answers to these two different questions, so I need to know what you really are asking. \$\endgroup\$
    – Valley Lad
    Nov 18, 2018 at 20:09

1 Answer 1


Yes, but not easily, and it depends on your DM and your amassing the necessary preparatory knowledge

Based on the answer to this question it seems your DM could decide to allow you to contact a particular named entity with the contact other plane spell.

But since the spell description says nothing about forcing or guaranteeing a truthful answer, your best chance is to get the answer from another entity who knows a demon’s name and can be relied upon to tell it to you truthfully.

Toward this end, your DM might make you pass History, Arcana and/or Religion checks to know the name of a long-dead sage who (1) has a likelihood of possessing the requisite knowledge (of a demon’s true name) and (2) who is likely to be compliant and truthful to the questioning enabled by your casting contact other plane (perhaps based on their alignment and their connection to you via the plot or backstory of your adventure, e.g. were they a member of your faction 100 years ago and would sympathize with your purpose?).

Spending time on research at a relevant library might convince your DM to lower the DC for such checks.


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