Yes, it is possible (depending on your circumstances and DM)
Nothing in the rules prevents this
There is nothing in the rules for resting that prescribes the environment that you can rest in. There are only certain things that interrupt rest according to the rules:
If the rest is interrupted by a period of strenuous activity - at least 1 hour of walking, ...
Add the modifier (+2)
As you say, agonizing blast allows one to "add your Charisma modifier to the damage [*eldritch blast] deals on a hit." (PHB p.110, emphasis mine)
Your Charisma modifier is +2, as you can see from PHB p.13. (Or many of us end up memorizing the mathematical rule: "subtract ten, divide by two, round down" to get from ...
Yes, Witch Sight sees through Mirror Image
Mirror Image is illusion magic, which Witch Sight sees through. While not concealing them in the same way Invisibility might, it is concealing them in the same way that hiding in a crowd would (the common definition of conceal being: "keep from sight; hide"). Thus, they should be able to see the real ...
...the particular combination of sounds, with specific pitch and resonance, sets the threads of magic in motion.
If you can argue that this is ALL that is needed to cast a purely verbal spell, then anyone or anything with a mouth can cast it.
Let's get more basic: suppose you don't have spell slots left to cast ...
You can wear leather armor (AC=11+DEX); if you do you cannot cast mage armor on yourself per its description.
Or you can cast mage armor on yourself (AC=13+DEX) and not wear the leather. Naively, this is an unambiguously-superior choice. Two more AC points and, since the invocation gives you mage armor at will, there's no cost in spell slots.
It's not inherently unbalanced, but it breaks theme
In essence, you're moving the Sorcerer's ability to turn spell slots into other spell slots to the Warlock, with the added bonus of being able to do it in one turn. (A sorcerer needs to turn a spell slot into spell points first, and then turn those spell points into new spell slots.)
In itself, this isn't ...
"Hit" is the general term used for "You made an attack roll and equalled or beat the target's AC".
So this would work just fine. If an ability was restricted to being used only with Melee weapons (or ranged ones) then the text would mention this directly by saying something like:
"When you hit a creature with a melee weapon attack" or "When you hit a ...
There are a number of answers:
I speak as a current player of a 5e warlock, who has 20 cha and agonizing blast, and who does not at all feel like an overwhelmingly dominant force on the battlefield. I manage to do my part, but "trivialize" would not describe.
Melee troops getting up close and personal with the warlock. If you're standing next to an enemy,...
Sure, it can't hurt.
Assuming that the player agrees (and I see no reason for them not to), yes, you can just assume that a warlock with that invocation starts with their buffs on.
I played a 3.5 game where all of us were using highly optimized, self-buffing characters who would stack buffs on ourselves before every combat. It was a waste of time for ...
Or, more specifically, yes, as long as you didn't get those features via multiclassing, which is never.
The multiclassing rules state:
If you gain the Extra Attack class feature from more than one class, the features don't add together. You can't make more than two attacks with this feature unless it says you do (as the fighter's version of ...
Except where noted in the multiclassing rules, when you gain class features depends on your class level. In this case, invocations are class features that don't have special rules in the multiclassing rules that say otherwise, so you get them according to your class level.
Note that in the case of invocations, it's even stronger than "it's not mentioned ...
Eldritch Smite is Warlock slot only
Only warlock spell slots from the Pact Magic feature can be expended to use Eldritch Smite; spell slots from the Spellcasting feature do not work with it.
An unofficial tweet by rules designer Jeremy Crawford in November 2017 confirms that this was intentional (unlike the paladin's Divine Smite, which had similar wording ...
The skeleton may be moved twice; no falling damage
The skeleton moves twice if each eldritch blast rolls "to hit" successfully. This would leave the skeleton in its original position at the end of Doris' turn (possibly destroyed). It is worth noting that the trigger to Boris' attack is Doris' attack, so Doris' turn is "when it all happens."
When the ...
The wording is not vague
You always take the maximum value of any dice rolled to heal you. If someone casts a spell that heals 2d8+3 hp to everyone in 30 feet and it affects you and they roll a 3 and a 1 you heal 19 hp and everyone else affected heals 7. You treat dice rolled to heal you as if they rolled their maximum value for you. The source of the die ...
It returns with all inscribed rituals:
Luke Anderson @SaunaNotSawna · 23 Apr 2016
@JeremyECrawford When I replace my Pact of the Tome Tome, does it come back with all of my rituals/cantrips still in it?
Jeremy Crawford @JeremyECrawford · 26 Apr 2016
Qzotia @SorcererQzot · 24 Apr 2016
This is a case where specific beats general. Book of Ancient Secrets does exactly what it says, which is that it allows you to:
[A]dd other ritual Spells to your Book of Shadows. When you find such a spell, you can add it to the book if the spell’s level is equal to or less than half your warlock level (rounded up)
3/2 = 1.5 ~= 2. You can transcribe ...
You would have a +1 Sword of Wounding
You have quoted the relevant text. The sword does not have a bonus to attack or to damage rolls. The damage is a secondary effect on the creature's turn and is not a part of the weapon's damage roll. Thus, Improved Pact Weapon's bonus applies.
Drop 'em like they're hot
This was a phenomenal maneuver! As you've said, the warlock invocation grasp of hadar states:
you can move that creature in a straight line 10 feet closer to you.
Since you are flying and above them, that does mean you pull them off the ground. There is no difference in the language or any requirement that they stay on the ground, ...
Jeremy Crawford answered a question like this on Twitter in November 2015. Darkvision is shades of grey. Devil's Sight kicks in only in total darkness.
Devil's Sight invocation gives you no benefit in dim light and full color vision in darkness. Intended?
Devil's Sight is meant to be an eerie ability: "Douse that candle so ...
Hex Warrior on a normal weapon
Yes, the player must use this ability after every long rest if you want to keep using the benefits.
As a DM, you can allow the player to just do it every day without them having to tell you each time. Tell them that you will simply assume they do it with that particular weapon every day unless they tell you otherwise. There is ...
Any spell in your Book of Ancient Secrets can be cast as a ritual. A spell in your Book of Ancient Secrets can only be cast using a spell slot if you also currently know the spell
The Book of Ancient Secrets states:
[...] You can’t cast the spells except as rituals, unless you’ve learned them by some other means. [...]
What this means is that a spell ...
The Warlock can take Improved Pact Weapon
Additionally, when you gain a level in this class, you can choose one of the invocations you know and replace it with another invocation that you could learn at that level.
Jeremy Crawford has clarified:
Q: [I]n the warlock rule for retraining an invocation on level up, what level is "that level"?
You can heal an unconscious ally with Raven Queen's Blessing
The blessing has no requirement for the creature to be conscious. Similar abilities that do have restrictions state something like:
"... that isn't incapacitated..." (Sneak Attack)
"... who can hear you." (Bardic Inspiration)
Using Raven Queen's Blessing will restore at ...
As you have stated, Eldritch Invocations are magical, and unless they are created by an artifact, or deity, i.e. the casting is through an artifact, or cast directly by the deity, then it will not work in, or protrude into an anti-magic field.
Movement breaks the invisibility of "One With Shadows".
The Eldritch Invocation "One With Shadows" states:
When you are in an area of dim light or darkness, you can use your action to become invisible until you move or take an action or a reaction.
If you move, whether on your turn or outside of combat, the invisibility ends.
I have this exact issue in a game I'm running (and the warlock can now fly, making him even more effective!). My strategies are still evolving, but I broadly have two categories I use to provide challenges for him: hard counters and soft counters.
Of those, I strongly prefer the soft counters.
Soft counters are anything which frustrates or ...
Since it does not say that it includes ammunition, it doesn't include ammunition. If an ability says that a special item does not require ammunition, it says so, such as with the Artificer Infusion "Repeating Shot" which includes the line
If you load no ammunition in the weapon, it produces its own...
Since the eldritch invocation does not include a ...
No feature which grants new spells counts against your spells known, unless it explicitly says so. Spells Known for the Warlock is exclusively for the Pact Magic mechanic, which this is not a part of.
No, the warlock can't understand specific codes or Thieves' Cant
The Eyes of the Rune Keeper states that (emphasis mine):
You can read all writing.
This by itself leaves some room for interpretation. Fortunately, we have more information. The Sage Advice Compendium has a question on this feature:
Does the Eyes of the Rune Keeper invocation work on magical ...