Does an out-of-sight creature affected by the Fear spell have to keep running if they fail the saving throw?

Imagine a (D&D 5e) spellcaster casts Fear on an enemy, and the enemy fails their Wisdom saving throw. On its turn, the enemy drops what it’s holding and takes the Dash action, running away from the spellcaster and around a corner, putting it out of sight of the spellcaster. The enemy ends its turn out-of-sight of the spellcaster, so it can make the Wisdom saving throw again; again, it fails. On its next turn does the enemy have to continue running away? Even though it’s out of sight of the spellcaster? My reading of the spell is yes: they have to continue to run away until they succeed on the save (or the spellcaster drops the spell for some other reason). Is this right, or can the enemy remain in place out-of-sight? (They obviously can’t approach closer to the spellcaster because they’re affected by the frightened condition.)

Does the Eldritch Knight’s Eldritch Strike feature impose disadvantage on a saving throw against a spell cast before the attack?

Consider the following scenario:

A level 10 Fighter with the Eldritch Knight (EK) archetype (PHB, p. 74-75) is facing a single opponent, and has hold person as a spell available.

  1. EK attacks with both attacks available. If both miss, they try again next turn. If either hits, Eldritch Strike (the level 10 archetype feature) triggers against the target, and EK will proceed to the next step.
  2. (a turn passes)
  3. On EK’s next turn, they cast hold person on the person targeted previously. The target has disadvantage on the save due to Eldritch Strike. If they still pass, EK goes back to square one. Otherwise, EK does the following:
  4. EK Action Surges (Fighter level 2 ability). They use the Attack action to get two attacks with advantage against the target. If either hits, it does critical damage (thanks to the paralyzed rider on hold person), and Eldritch Strike triggers.

The wording in Eldritch Strike is as follows:

When you hit a creature with a weapon attack, that creature has disadvantage on the next saving throw it makes against a spell you cast before the end of your next turn.

Does the target have disadvantage on the save against hold person it makes at the end of its next turn, even though hold person was cast before the triggering of the Eldritch Strike event that would impose disadvantage?

Do you know when you fail a saving throw?

The pathfinder rules say:

A creature that successfully saves against a spell that has no obvious physical effects feels a hostile force or a tingle, but cannot deduce the exact nature of the attack. Likewise, if a creature’s saving throw succeeds against a targeted spell, you sense that the spell has failed. You do not sense when creatures succeed on saves against effect and area spells.

If a creature’s saving throw fails against a spell, does the creature still feel that "hostile force or a tingle" or otherwise know that they’ve failed a save?

(I’m asking this question because it’s relevant to How powerful can a 20th-level Wizard make a 1st-level Fighter without allowing him to realize it is the Wizard's doing?)

What spells or other effects cause a creature to make a saving throw to avoid being knocked out?

I saw that a hydra has "advantage on saving throws against being… knocked unconscious" and was curious as to what spells or effects would cause such a thing to happen. The only effect that came to mind is the sleep spell, which operates on hit points rather than a saving throw. What else can knock a creature unconscious?

What happens to an abjurer’s Arcane Ward when they fail the saving throw against a Banshee’s Wail?

An abjuration wizard has the Arcane Ward class feature (PHB, p. 115):

Starting at 2nd level, you can weave magic around yourself for protection. When you cast an abjuration spell of 1st level or higher, you can simultaneously use a strand of the spell’s magic to create a magical ward on yourself that lasts until you finish a long rest. The ward has hit points equal to twice your wizard level + your Intelligence modifier. Whenever you take damage, the ward takes the damage instead. If this damage reduces the ward to 0 hit points, you take any remaining damage.

A Banshee (MM, p. 23) has the Wail action:

Wail (1/Day). The banshee releases a mournful wail, provided that she isn’t in sunlight. This wail has no effect on constructs and undead. All other creatures within 30 feet of her that can hear her must make a DC 13 Constitution saving throw. On a failure, a creature drops to 0 hit points. On a success, a creature takes 10 (3d6) psychic damage.

If an abjuration wizard who has an Arcane Ward active fails their saving throw against a Banshee’s Wail, they would drop to 0 hit points. What happens to their ward?

  • Does it drop to 0 hit points instead of the wizard (meaning the wizard does not drop to 0 hit points)? The Wail ability is not damage (if you fail the save), whereas the Arcane Ward specifically mentions damage, so I assume this isn’t how it works…
  • Does it disappear when the wizard drops to 0 hit points? I don’t think anything about the Banshee’s Wail or dropping to 0 hit points generally would make it disappear…
  • Does it remain active? I’m assuming this is the most likely answer, given my above reasoning…

What happens when an unconscious creature fails their saving throw against a Banshee’s Wail?

A Banshee (MM, p. 23) has the Wail action:

Wail (1/Day). The banshee releases a mournful wail, provided that she isn’t in sunlight. This wail has no effect on constructs and undead. All other creatures within 30 feet of her that can hear her must make a DC 13 Constitution saving throw. On a failure, a creature drops to 0 hit points. On a success, a creature takes 10 (3d6) psychic damage.

If someone was already at 0 hit points (for example, having failed their saving throw against a different Banshee’s Wail), what would happen if they fail their saving throw against this Banshee’s Wail (assuming they still need to make a saving throw)?

  • The unconscious creature takes one step towards death, as though they took damage (thus making the saving throw meaningless, since they’d take a step towards death either way);
  • The unconscious creature just dies (unlikely, but in case there’s something written that would imply this hidden in the rules somewhere);
  • Nothing, since this isn’t damage, its just an effect (meaning the unconscious creature would be better off failing this save than passing in this case!)
  • Something else…

Can absorb elements be triggered on attacks that require a saving throw or be paralyzed, incapacitated… and elemental damage on a failed save?

Say an enemy is casting a spell or using an ability that forces the player to make a saving throw or be "conditioned and take X elemental damage".

Does absorb elements go off if the save is failed? Or because of the condition effect, does that mean the reaction can’t be used if you fail the save, take damage, and conditioned? Or even can it be cast before the save (and wasted if the save passes)?