Xanathar's Guide to Everything has Summon Lesser Demons at 3rd spell level and Summon Greater Demon at 4th spell level but pretty sure BG3 just going to be the Players Handbook so no Xanathar's stuff.
Planar Binding. a 5th level spell, could be useful but I doubt we'll get it, 1 hour cast time and you need to find your own Demon, just lets you bind it for 24 hours.
Infernal Calling is another Xanathar's 5th level spell but it Devils and not Demons. The Devil is also not under your control so have fun with that. I would suggest having Planar Binding handy. I am sure the Devil will chill out for an hour for you to cast it.
Summon Fiend from Tasha's Cauldron of Everything is level 6 spell and you can choose Demon, Devil, or Yugoloth but doubt will ever see stuff from Tasha's or get to the point where we can cast level 6 spells.
Last edited by Merry Mayhem; 18/11/20 08:19 PM.
