I want to make an neutral evil wizard swear to be my teacher in exchange for saving his life. Is there a spell or something to make him keep his word? Are there options if he is from another magic class, like sorcerer or warlock?

They are both Drows so I was thinking of making him swear to Lolth, but I don't think that would stop him from betraying me. This is only roleplay oriented, so that I can pick up a second class.

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    \$\begingroup\$ Never trust anyone who swears by the name of a god of trickery. \$\endgroup\$ – GMJoe Mar 31 '15 at 4:31
  • \$\begingroup\$ Hahaha, yeah you are rigth I forgot that detail. \$\endgroup\$ – Voj Lmef Dos Mil Nueve Mar 31 '15 at 5:11
  • \$\begingroup\$ What do you mean "this is only role oriented"? Do you mean roleplay related? \$\endgroup\$ – doppelgreener Mar 31 '15 at 6:37
  • \$\begingroup\$ Yup, I want an excuse to have a second class. \$\endgroup\$ – Voj Lmef Dos Mil Nueve Mar 31 '15 at 6:49

There is a spell to make him keep his word: Geas (PHB, page 244.). It would probably break copyright for me to type it all out here, so I'll mention the important bits.

  • Geas is a 5th-level spell available to most spellcasters that forces a target to carry out a task or command given at the time of casting.
  • A Geas lasts a limited amount of time based on what level it is cast at (30 days at 5th level), or is permanent if cast at 9th level.
  • Geas enforces itself by dealing 5d10 damage every day that the target doesn't follow the Geas.
  • As a side effect, it also makes it impossible for the target to attack you. (Given that your intended target is evil, this might actually be more valuable than the main effect.)

If you can't cast Geas yourself, your best bet is probably to find the temple of a Lawful Good deity; a Cleric of such a deity should be willing to cast Geas to help you make them keep their word, although a donation to their temple might not go astray.

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    \$\begingroup\$ Bear in mind the target can choose to take the damage and cast Dispel Magic. The damage only happens once per day, so it's not really a very practical way to bind wizards if they can handle the damage. \$\endgroup\$ – Strill Mar 31 '15 at 6:28
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    \$\begingroup\$ As stated in the spell description, also Remove Curse, Greater Restoration or Wish also ends it. It is weird that if casted using a spell slot of 9th level, the spell "lasts until it is ended by one of the spells mentioned above". I wonder if Dispel Magic is still effective by RAW. \$\endgroup\$ – fortuna Mar 31 '15 at 9:49
  • \$\begingroup\$ Create Thrall (level 14 GOOlock) might be a better way to do it. That way, the guy won't resent you, you can get telepathic instruction, and you know if the spell ends. \$\endgroup\$ – Ethan Mar 31 '15 at 18:55
  • \$\begingroup\$ @Ethan Unfortunately Create Thrall doesn't actually make them do anything. \$\endgroup\$ – Miniman Mar 31 '15 at 21:53
  • \$\begingroup\$ It wouldn't necessarily force him, but the advantage on charisma checks wouldn't hurt, and you'd at least know that he thinks he's your best friend. Probably at least as compelling as a geas that he could ignore without dying. \$\endgroup\$ – Ethan Apr 1 '15 at 22:24

I would think that the best way to get him to do this is to simply ask him. You would have to roll against Persuasion to convince him, but he's Neutral Evil, so you'll have to convince him that it's in his best interest to do this. In convincing him of this, he may require that you go on a quest to bring back a particular item or you could find out his motivation and offer that if you're also a wizard, your party would have a better chance of helping him acquire what he wants (This could give your DM an idea for your next campaign too).


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