Can a simulacrum cast magic jar?

RAW, nothing prevents a simulacrum from casting magic jar.

That being said, there is nothing mechanically that would prevent a simulacrum with a 6th level slot from casting magic jar on itself. You have correctly observed that the only target mentioned is "self" with no creature type limitations.

Can a simulacrum cast spells?

The simulacrum lacks the ability to learn or become more powerful, so it never increases its level or other abilities, nor can it regain expended spell slots. It is a duplicate, so yes it can cast (ritual) spells.

Can simulacrum cast simulacrum?

Can I Make a Simulacrum of Myself? You sure can! And that's where things can get especially weird since as a wizard able to cast the simulacrum spell, your simulacrum will also be a wizard able to cast the simulacrum spell.

Can a simulacrum cast create Magen?

You could always have your Simulacrum cast create Magen and have it tell them to follow your commands. While this is sort of a solution, it opens up a vulnerability.

Can a simulacrum copy spells?

No. If you read the second paragraph of the Simulacrum spell, it states that "... It never increases its level or other abilities, nor can it regain expended spell slots." It has the available spell slots and known spells that your character had at the moment of casting.

Magic Jar: How does it work?

Can you twin simulacrum?

Yes, Simulacrum can be twinned

Just to take the first line of the Simulacrum spell: You shape an illusory duplicate of one beast or humanoid that is within range for the entire casting time of the spell.

Can a simulacrum have a familiar?

You can't use Simulacrum on a familiar. Simulacrum only works on Beasts or Humanoids - and Find Familiar specifically says the creature summoned becomes a Celestial / Fey / Fiend instead of a Beast.

Can simulacrum use spell scrolls?

Nothing happens to the wizard's simulacrum.

The wizard would have to cast the spell again to destroy his simulacrum. When someone else uses a spell scroll the wizard made, that someone is casting the spell, not the wizard, so someone else casting the spell doesn't affect the wizard's simulacrum.

Can you true polymorph into an NPC?

No, you as a player cannot craft a new creature, you may only choose a creature from a source book, or that your DM has created, so long as such creature has a challenge rating.

Can true polymorph turn into a dragon?

Yes you can true polymorph into an ancient brass dragon

As you say, the spell and rules are clear. An ancient brass dragon is a creature, it is not a shapechanger (and may not matter if they were), and it is of the appropriate CR for your level.

Can a simulacrum act independently?

It's not actually the creature you duplicated, though. So if the creature you copied was fiercely independent and highly intelligent, the simulacrum would be fiercely independent, highly intelligent, but also always friendly to you and following your orders to the best of its abilities.

What can a simulacrum do 5e?

You shape an illusory duplicate of one beast or Humanoid that is within range for the entire Casting Time of the spell. The duplicate is a creature, partially real and formed from ice or snow, and it can take Actions and otherwise be affected as a normal creature.

Can a simulacrum prepare different spells?

Yes, if … … the Illusion uses all the Statistics of the creature it duplicates. For a cleric, one of those “statistics” is their Spellcasting feature which says: You can change your list of prepared Spells when you finish a Long Rest.

Does true polymorph work on a Tarrasque?

True Polymorph

With this spell you can become a second Tarrasque. The only way to fight a monster is with a monster of your own.

Can permanent true polymorph be dispelled?

True Polymorph isn't permanent, as in you cannot ever dispel it or avoid suppressing it, because it remains an active spell with a duration and ending qualifiers.

Does a simulacrum have all spell slots?

Your spell slots are part of your statistics, so if you cast Simulacrum on yourself, the simulacrum you create has the same spell slots that you had when the spell was cast.

Can simulacrum attune to items?

Yes, it can use items

... Otherwise, the illusion uses all the statistics of the duplicated creature. It can use items provided to it, and attune with them as normal.

Can a wizard learn wish?

Wish is a 9th-level spell. It's only on the wizard and sorcerer class spell lists (and the Genie-patron warlock's spell list, as I mention a bit later). Full caster classes (including sorcerers and wizards) gain 9th-level spell slots at level 17 in the class.

Does simulacrum copy equipment?

So, yes the simulacrum you created will have class features and proficiencies of the creature it duplicated.

Can you dispel magic a simulacrum?

One of the biggest weaknesses of a Simulacrum is its susceptibility to Dispel Magic (as the duration says "until dispelled"). So, dispelling a Simulacrum "kills" it in some way. The Death Ward spell protects against the first effect that would kill the target.

Can a dragon cast simulacrum?

She would like to cast Simulacrum. Monster Manual Page 86 / Variant: VARIANT: DRAGONS AS INNATE SPELLCASTERS: Dragons are innately magical creatures that can master a few spells as they age, using this variant. A young or older dragon can innately cast a number of spells equal to its Charisma modifier.

Can simulacrum regain ki points?

RAW, yes. There is no restriction on the Simulacrum's ability to regain other expendable class feature. Additionally, any creature can take a short or long rest (and thereby restore the expended class features).

Can a simulacrum take a long rest?

A character can't benefit from more than one long rest in a 24-hour period, and a character must have at least 1 hit point at the start of the rest to gain its benefits. There is nothing in the rules that prevents a simulacrum from taking a long rest, so a simulacrum may take a long rest.

Can a simulacrum reproduce?

The Simulacrum is a Construct

As such, any human mating with a Simulacrum would not be the same species, thus rendering true reproduction impossible.