Grog tries his hand, but feels bad when he rips the magical stone out of the ground, and cat get it back in. Grog smart enough to know he didn’t do it right, only option is to travel the country side and find the real person who will free the sword, bringing it to them rather than the other way around. Grog so smart, this way better idea
At the end it is revealed that only the chosen could wield the sword. No one ever mentions that the sword had to be released from the stone and Grog was the hero all along. Because to be a hero you have to be strong. Foolproof selection method.
it would be even funnier if it’s a fighter with the barbarian archetype (pf2e) or 1 level of fighter and the rest of barbarian (dnd) so that their lore is someone who was trained to use a sword but couldnt, so started raging and getting stronger to use that hammer