How do you get 'Excalibur' with the console?

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

Court artifact · Pedestal Item

'Excalibur'

Common

'Excalibur' is a common pedestal item artifact in Crusader Kings III: Court grandeur baseline +1, Prestige +0.1/month, Renown +0.03/month, Knight Effectiveness +2%. Quality 15 and wealth 15; maximum durability 60, and it does not wear out. At game start it goes to a ruler the game picks. Patch 1.20.0.3, from game/common/scripted_effects/01_exp1_historical_artifacts_creation_effect.txt.

Quick answers (2)

What does 'Excalibur' do in CK3?: Court grandeur baseline +1, Prestige +0.1/month, Renown +0.03/month, Knight Effectiveness +2% (patch 1.20.0.3).
How do you get 'Excalibur' with the console?: effect create_artifact_excalibur_effect = { OWNER = root } — runs the scripted effect that makes it, for the character you play (debug mode).

There is nary a ruler in Britain who doesn't claim to have the true Excalibur. Wars are paid for by selling Excaliburs, and you must hope your guests don't catch another displaying the sword.

Effects

History and who has it

Made before recorded history.
At game start: a ruler the game picks.

How it is made

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

effect create_artifact_excalibur_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 (excalibur_modifier) and the English localisation, Crusader Kings III 1.20.0.3.