How do you get Throne of Charlemagne with the console?

effect create_artifact_throne_charlemagne_effect = { OWNER = root } — runs the scripted effect that makes it, for the character you play (debug mode).

What if the owner can't benefit from Throne of Charlemagne?

They get Court grandeur baseline +2, Renown +0.02/month, Prestige +0.3/month instead.

Court artifact · Throne

Throne of Charlemagne

IllustriousUniqueThe Royal Court

Throne of Charlemagne is an illustrious throne artifact in Crusader Kings III: Court grandeur baseline +4, Renown +0.04/month, Prestige +0.5/month. Quality 100 and wealth 100; maximum durability 150, and it does not wear out. Made on 800.12.25 for Karl Karling in Aachen. At game start it goes to the holder of Holy Roman Empire — needs The Royal Court. It needs The Royal Court. Patch 1.20.0.3, from game/common/scripted_effects/01_exp1_historical_artifacts_creation_effect.txt.

Quick answers (3)

What does Throne of Charlemagne do in CK3?: Court grandeur baseline +4, Renown +0.04/month, Prestige +0.5/month (patch 1.20.0.3).
How do you get Throne of Charlemagne with the console?: effect create_artifact_throne_charlemagne_effect = { OWNER = root } — runs the scripted effect that makes it, for the character you play (debug mode).
What if the owner can't benefit from Throne of Charlemagne?: They get Court grandeur baseline +2, Renown +0.02/month, Prestige +0.3/month instead.

A simple yet imposing throne which is free of ornamentation. Constructed from solid marble, the slabs are rumored to be taken from the Church of the Holy Sepulchre in Jerusalem.

Effects

Court grandeur baseline+4
Renown+0.04/month
Prestige+0.5/month

Also gets random bonuses when it is made, from add_scaled_artifact_modifier_majesty_effect, add_scaled_artifact_modifier_rulership_effect — the bigger ones at higher rarity.

For an owner who can't benefit from it

The template gives these instead of the effects above when its “can benefit” check fails:

Court grandeur baseline+2
Renown+0.02/month
Prestige+0.3/month

Who can benefit (can_benefit) (4 lines of game script)

OR = {
	christian_artifact_access_trigger = yes
	islamic_artifact_access_trigger = yes
}

As written in game/common/artifacts/templates (throne_charlemagne_template).

History and who has it

Made on 800.12.25 for Karl Karling in Aachen.
Kept with the title Holy Roman Empire from 973.5.7.
At game start: the holder of Holy Roman Empire — needs The Royal Court.

How it is made

The game creates it with the scripted effect create_artifact_throne_charlemagne_effect. In the console (how to open it), this gives it to the character you play:

effect create_artifact_throne_charlemagne_effect = { OWNER = root }

Built from the effect's file; not run in the game by us.

Source: game/common/scripted_effects/01_exp1_historical_artifacts_creation_effect.txt, common/modifiers (throne_charlemagne_modifier), common/artifacts/templates (throne_charlemagne_template) and the English localisation, Crusader Kings III 1.20.0.3.