I am struggling a bit to grasp the limits of the similar area definition in the description of the teleportation spell for D&D 5e.
The part I have a problem with is more specifically with the “area that’s visually or thematically similar to the target area”.
For example if the caster was in the elemental plane of fire and tried to teleport to some kind of Oasis that he would have been tricked into thinking exists on that plane what happens?
Does it get teleported to the closest lava pool with a shape somewhat similar to where it thought it was going? Does it get teleported to the water it has in its backpack or does the spell fails?
With the definition of the spell I would assume that if anything on the plane has some kind of link with the target area that the DM can think of, it should be allowed to be defined as a similar area, but some situations may have some really messed up link and I wonder if in extreme cases it isn’t more logical to have the spell to fail.