I noticed that Dominate Person spell did not have the same conditions as Charm Person - 'When the spell ends, the creature knows it was charmed by you.'

Would that mean, even if they succeed or fail their saving throw, They would not know you dominated them? Or would it be more of a telepathic command like 'Forget I dominated you'?

In previous editions(pre-4th, at least), there was a specific prohibition against giving a dominated person an obviously self-destructive order.  I notice that prohibition is conspicuously absent, now.  Was that intentional?

Quote from Mordaris >>

In previous editions(pre-4th, at least), there was a specific prohibition against giving a dominated person an obviously self-destructive order.  I notice that prohibition is conspicuously absent, now.  Was that intentional?

 Yes that is intentional, note the line ‘You can use your action to take total and precise control of the target.’

Quote from 8Charlie >>

Quote from Mordaris >>

In previous editions(pre-4th, at least), there was a specific prohibition against giving a dominated person an obviously self-destructive order.  I notice that prohibition is conspicuously absent, now.  Was that intentional?

 Yes that is intentional, note the line ‘You can use your action to take total and precise control of the target.’

The best the target can expect is a new save after the fact, if it takes damages.

Something else funny to note is that it comes with the charmed condition, opening the target to social manipulation for the duration.  Unlike Charm Person, there is no social backlash when it wares off, and the target has no special awareness of what’s going on.

Does this work on characters that are immune to the charm condition?

No, because all the fancy effects of the spell only last while the target is charmed.

I'm going kindly ask you to NOT say that ever again.

Quote from skumbulous >>

I'm going kindly ask you to NOT say that ever again.

Sorry, your charms don't work on me! (Also, it's kind of obvious.)

This spell has no effect on creatures immune to the Charmed condition. 

Quote from demonwombatofdoom >>

I noticed that Dominate Person spell did not have the same conditions as Charm Person - 'When the spell ends, the creature knows it was charmed by you.'

Would that mean, even if they succeed or fail their saving throw, They would not know you dominated them? Or would it be more of a telepathic command like 'Forget I dominated you'?

 Yes someone please answer this if they know. Been looking for the same answer.

I'm curious about this spell to see if this would technically be possible. 

So my character's father has the ability to cast dominate person, a spell that my character can also cast. If she were to be dominated, would she technically be able to cast Dominate person on our barbarian? Or is that considered too complicated, since it would take my character's concentration to maintain?

They only know if the spell says so, such as in Charm Person: ”When the spell ends, the creature knows it was Charmed by you.”

They technically don't know they were charmed, however they are aware of how and what they did during the spells duration, even if just as an bystander to their own body. So lets say a very self aware and arcana trained character, like a wizard or sorcerer, would probably figure out that they were controlled by some arcane means, while the Int6 barbarian would just be confused by their own actions, if at all.

In my opinion you can't be ordered to forget something because it is not a conscious action to "forget".

That, of course, is only my interpretation of the raw, but I think it makes sense. 

Hope that helps :)

A dominated character is able to cast and hold a concentration spell, so following the raw it should be possible.

Putting aside vocal ans somatic components. If any spell has a perceivable effect on the target, they will know once they're able to perceive it (chapter 10: spellcasting, targets tab, PHB). charm is a condition, rather than a spell, that makes it easier for the charmer to make charisma checks on the charmed. the target of charm person believes they're acting out of their own autonomy, so they can't "perceive" you being more charismatic, hence the tidbit at the end. The target can perceive telepathy if and a full loss of self-control, so if you use either of those effects, it's reasonable for a player to understand that they're under a sort of spell. if you were to only use the spell to take advantage of its charm feature, then the creature may not notice once it ends unless they have a habit of being charmed by things.

Planning to use this to rob a noble and make him fist fight the guards to get rid of the evidence.

ooga

booga

Is there a reason why this spell doesn't include the condition " you can't cause the target to harm themselves or put themselves in harm's way"? 

Most other charm spells seem to have that wording

Quote from Revan12 >>

Is there a reason why this spell doesn't include the condition " you can't cause the target to harm themselves or put themselves in harm's way"? 

Most other charm spells seem to have that wording

 Because with this one, you can :)

“If you or creatures that are friendly to you are fighting it, it has advantage on the saving throw.”

If a Player fails their initial saving throw during combat with advantage, are they now considered to be fighting for you? Do they get advantage on saving throws to break the spell while they are dominated?