Hi there Oscar,
Welcome to planDisney and thank you so much for your question!
When I saw your question I had to jump on it, because - believe it or not - I am one of the few that
Disneyland Park's Sword in the Stone has judged worthy and I have actually pulled it up (and received a commemorative medal still on display today in my house)!
When I was a kid, Merlin would visit the Sword in the Stone area in front of
King Arthur Carrousel at various times throughout the day to find someone worthy of the sword. Typically, he would pick a grown-up out of the audience who would give it their all but was ultimately unsuccessful. Then he would select a child who would pull it up with ease. On one trip when I was around 7 or 8, I was chosen and lifted the sword!
While Merlin currently doesn't visit the sword now (maybe he's busy keeping Mad Madam Mim at bay?), the sword has been known to have been lifted on occasion when the right one stops by. It's definitely worth giving it a shot on each visit when you're in
Fantasyland - plus it makes for a fantastic photo opportunity either way.
Thanks again for your question, Oscar! I wish you luck in your efforts to pull the sword from the stone!
Have a Magical Day,
Greg