The Dark Delirium Warlock ability plunges a creature into an Illusory Realm and it rolls a Wisdom Save. Upon a failure, the creature is either Frightened or Charmed by the Warlock.
Things about the Illusion:
- The entire world you are now in is the Illusion. For the target, it looks like they've been transported between Planes or teleported somewhere.
- You and you alone decide the appearance of the Illusion.
- The creature can see and hear only itself, the Illusion, and you.
If I am in combat with a creature in a battlefield with dangerous terrain, can I use the illusion to make the creature think the dangerous terrain isn't there, and then convince the charmed creature to walk towards me (or a Frightened one to run away from me) and into dangerous terrain?
Let's say that I am interacting with an Orc whom, for whatever reason, I have to kill, and there are ledges between me and my target. I, as an Archfey-Pact Warlock of 14th Level, cast Dark Delirium on that Orc. The Orc fails the saving throw and is plunged into the Illusion and Charmed. When describing the Illusion, I describe one that looks like an ethereal marshy sort of place without any sort of ledge between us.
Can I convince (through social checks) the now-Charmed (and probably-curious) Orc to walk towards me, even if that would move the Orc over the precipice that divides us since the Orc can no longer see the edge?
Would it be any different if we were not fighting before the spell was cast (say, the Orc was a sentry who was previously unaware of my presence) versus if we were?
Mythologically-speaking (respecting to real-world mythology and not Forgotten Realms Lore), there have been several stories where a Fey creature of some sort has convinced an unfortunate traveler that they were walking on a path when, in fact, that traveler was actually sinking into a bog.