Casting spells while invisible

[rrealm]

Suppose a rogue/sorcerer cast invisibility on himself and snuck up to a creature. The invisible rogue/sorcerer wants to make sure that he hits his target and so he wants to cast true strike on himself. How can he cast the spell without giving himself away? The PHB says that the caster must speak in a loud firm voice when casting a spell. If he can’t hear himself because he’s deaf or silenced, he has a 20% of spell failure. But what if the caster whispers? 10%? Because he can hear himself but not very loud? What if he just lips the spell with no audio and without a metamagiced spell? Certainly it wouldn’t work 100% since he’s not using the feat or higher spell slot but could it work but just sometimes?

Obviously the target would get to make listen checks if the rogue/sorcerer cast the spell normal or whispered but what DC is fair?

 

[Mahali]

PHB says that the caster must speak in a loud firm voice when casting a spell. If he can’t hear himself because he’s deaf or silenced, he has a 20% of spell failure.

You answered your own question.

If you're deaf/silenced the miss chance is because you can't hear yourself at all and it won't sound the same. Not because you can't hear yourself well, you can't hear at all.

Have to get the Metamagic Feat to allow silent casting.

 

[Lord Pendragon]

If you're deaf/silenced the miss chance is because you can't hear yourself at all and it won't sound the same. Not because you can't hear yourself well, you can't hear at all.

Unless I'm mistaken, you cannot cast a spell with a verbal component if you are Silenced. It's more than just a 20% spell failure (such as with deafening), the spell simply will not go off.

And I wouldn't allow a caster to ignore the Verbal component of a spell without taking the appropriate metamagic feats. That's what they're there for. Otherwise, you either speak in a firm, loud voice or you don't cast the spell.

I believe that Hypersmurf mentioned at some point that he has a custom feat in his campaign that allows one to mumble spells instead of casting in the "clear, loud voice" and I might allow such a thing, but either way--Silent Spell or something like what Hypersmurf uses--it wouldn't be free.

 

[Thanee]

Casting a spell without being heard: Silent Spell (Metamagic).

Bye
Thanee

 

[MerakSpielman]

I suppose you could deafen your opponent first.

Or perhaps you could use a wand? I'm unclear if you have to speak to use a wand.

 

[Thanee]

You have to.

Bye
Thanee

 

[Vaxalon]

Seems like a nobrainer to me.

 

[Altamont Ravenard]

If you don't have the appropriate feat, you could always get yourself a metamagic rod. I'm sure a lesser metamagic rod of Silent spell is pretty cheap.

perhaps you could use a wand? I'm unclear if you have to speak to use a wand.

BUT you CAN use a wand while silenced, no? Or is it simply that wands aren't subject to ASF? (wait wait wait I don't want to start the whole Silence discussion)

AR

 

[rrealm]

Unless I'm mistaken, you cannot cast a spell with a verbal component if you are Silenced. It's more than just a 20% spell failure (such as with deafening), the spell simply will not go off.

You are correct in this.

"All sound is stopped: Conversation is impossible, spells with verbal components cannot be cast, and no noise whatsoever issues from, enters, or passes through the area."

 

[welby]

Most wands are command word activated, no? No ability to speak = no ability to say the command word.