Do you lose a turn/spell slot when casting a spell on invalid creatures?

Say my Mystic attempts to cast Fear as a 1st level spell on a creature.

1st: When you cast fear as a 1st-level spell, it affects one living creature of CR 4 or lower at close range…

If the DM reveals that the creature is above CR 4 and would be unaffected, does my turn then end with one of my 1st level spell slots being consumed?

As far as I could tell, I couldn’t find any specific rules about this in the spellcasting section of the CRB or elsewhere. I also haven’t played Pathfinder, but this question might apply for that system as well.

What is your spellcasting ability when casting a spell from a Ring of Spell Storing?

The Ring of Spell Storing states (emphasis mine):

[…] While wearing this ring, you can cast any spell stored in it. The spell uses the slot level, spell save DC, spell attack bonus, and spellcasting ability of the original caster, but is otherwise treated as if you cast the spell. […]

So say somebody has acquired such a ring and casts counterspell or dispel magic using it, or is targeted by the Arcane Trickster Rogue’s Spell Thief feature:

[…] If it is casting a spell of 4th level or higher, make an ability check using your spellcasting ability. […]

[…] For each spell of 4th level or higher on the target, make an ability check using your spellcasting ability. The DC equals 10 + the spell’s level. […]

[…] Immediately after a creature casts a spell that targets you or includes you in its area of effect, you can use your reaction to force the creature to make a saving throw with its spellcasting ability modifier. […]

What would “your” or “its” spellcasting ability modifier actually be? Do you use the modifier of whoever put that spell into the ring? Does anything change if you have levels in zero, one, or two classes that can cast spells?


Some related questions:

  • What is the spell attack bonus and spell save DC of a Thief using the Use Magic Device feature?
  • What is the spellcasting ability of a Barbarian Totem Warrior?
  • For the Ring of Shooting Stars, what is the spell save DC of Faerie Fire?
  • What is the spell save DC for this magic item from Waterdeep: Dungeon of the Mad Mage?
  • What is the Wand of Paralysis' Saving Throw?
  • Do racial/feat/non-Spellcasting classes' spellcasting abilities count as a spellcasting ability for Staff of Power?

I believe my question is a bit different from these previous ones because the Ring of Spell Storing explicitly says that the spell uses the original caster’s spellcasting ability and not the spellcasting ability of whatever creature is actually using the ring.

Do class or subclass features that affect spellcasting apply when casting a spell from an Artificer’s Spell Storing Item?

In my recent question about a homebrewed Artificer subclass, I was asked in a comment how one of the abilities that modifies spellcasting would interact with casting spells stored within a my subclass’s variant version of the Spell Storing Item feature that all Artificers get. I’d not considered it before, but I suspect it should work the same as a normal spell cast from a normal Spell Storing Item.

But as it turns out, I’m not actually sure how that works for normal Artificers either. Here’s the relevant rules text for Spell Storing Item (from Eberon: Rising from the Last War, page 58):

While holding the object, a creature can take an action to produce the spell’s effect from it, using your spellcasting ability modifier. If the spell requires concentration, the creature must concentrate.

Notable in that rules text is that it does not say that the creature using the object casts the spell, only that it produces the spell’s effect. This seems relevant because the top voted answers to this previous question seem to mostly attach to the “cast” terminology used by most magical items that grant extra spells.

In combination with the answers to that question, it seems like the different language (not using “cast”) may mean that using a Spell Storing Item isn’t spellcasting, and so no feature that modifies spellcasting will apply. But there’s enough ambiguity that I want to ask about it here. Do an artificer’s spellcasting features apply spells they store in an item? Do spellcasting-related features of the creature using the Spell Storing Item (which may or may not be the Artificer themself) apply?

For a concrete example, if an Artillerist stores Scorching Ray in a wand, staff or rod that they had previously made their Arcane Firearm, would they get an get an extra d8 to add to one of the spell’s damage rolls when they use the stored spell?

Casting a spell with somatic and material components with a Heavy-crossbow that is a focus

As stated in the title, I’ve read about casting spells with somatic component with two-handed weapons here.
The thing is that the Xanathar’s warlock invocation [Improved Pact Weapon] says that you can treat a weapon as a spellcasting focus. So the thing is, could I cast a spell of that type (fireball) with my two-handed crossbow?.

Thank you in advance.

Can spellcasters try to make it difficult to identify what spell they’re casting?

How to identify a spell being cast? discusses how to identify a spell.

This question seeks to discover whether there are steps a spellcaster could take during casting to make this identification more difficult. The question is not about hiding the casting (such as casting the spell round a corner, then releasing it with a reaction) – the person trying to identify the spell has full view of the spellcaster casting it.

Such steps might include:

  • Putting some irrelevant words around the actual mystic words of the verbal component
  • Waving your hands as if performing a somatic component, despite the spell not having one

Is this sort of thing possible while casting a spell (to be clear, without any special capability such as the Sorcerer’s Subtle Spell), and if so what effects does doing so have on spell identification?

Does Spell Perfection allow Quicken Spell to reduce a spell’s casting time?

The Quicken Spell metamagic feat lets you cast certain spells as a swift action (instead of a standard action). This causes the spell’s slot to increase by +4 levels.

The Spell Perfection feat has several benefits, including the following:

Pick one spell which you have the ability to cast. Whenever you cast that spell you may apply any one metamagic feat you have to that spell without affecting its level or casting time, as long as the total modified level of the spell does not use a spell slot above 9th level.

The text says “affecting” the casting time, rather than “increasing”. So how does this interact with Quicken Spell, which normally reduces the casting time?

Can the spell be cast as a swift action (as per Quicken) without the +4 spell slot increase?

Or is the spell’s casting time unchanged, thereby negating the benefits of Quicken Spell?

Can I break concentration with Haste, before it ends, by casting another concentration spell? [duplicate]

Example:

Turn 1: Cast haste. Do things.

Turn 2: Cast invisibility (end haste). Be invisible. No movement, no actions.

Turn 3: Be invisible. No movement, no actions. (Resolve haste)


The section on “Concentration” states:

[…] You lose Concentration on a spell if you cast another spell that requires Concentration. You can’t concentrate on two Spells at once. […]

The haste spell states:

Casting Time: 1 action […]

Duration: Up to 1 minute […]

When the spell ends, the target can’t move or take actions until after its next turn, as a wave of lethargy sweeps over it.

The invisibility spell states:

Casting Time: 1 action […]

Duration: Up to 1 hour […]

The spell ends for a target that attacks or casts a spell. […]

Does casting Polymorph on a creature break an active Warding Bond spell?

We had a recent event in our campaign where our Warlock used Polymorph (PHB p.266) to change another player into a Giant Ape.

I had Warding Bond (PHB p.287) cast on the player that was polymorphed. My question is about the mechanic of Warding Bond interacting with Polymorph.

Since the protection provided by Warding Bond is dependent on both the caster and creature wearing a platinum ring, is there anyway to maintain the Warding Bond spell while the creature is polymorphed?

Thanks.

Do the targets of Prayer of Healing need to be present during the casting time?

Prayer of Healing has a casting time of 10 minutes. The typical case for this spell would be a cleric casting this on injured members of a party while they rest. But what if one more fellow drops in right before the casting time is done?

That is, do the targets of the spell need to be chosen when the spell casting is started? Or upon completion of the casting time?

Can I only target other creatures, not myself, when casting spells such as Invisibility that target “a creature you touch”?

Invisibility reads: “A creature you touch becomes invisible until the spell ends…”

Greater Invisibility says: “You or a creature you touch becomes invisible until the spell ends…”

By omission, does this suggest that one cannot use Invisibility on oneself?