"The Elder Scrolls" has a function called legendary skills that allows players to return to level 15. Players who want to challenge high difficulty levels and players who want to have full skills can use legendary skills. After using them, although their level is lowered, the monsters will be reduced. The difficulty will not be reduced.
Legendary skills will return the player's skills to level 15.
When players feel that it is not challenging, they can choose to use legendary skills to return themselves to level 15.
When the player returns to level 15, the level of the monsters in the map will not be reduced. Relatively speaking, the monsters have been strengthened.
Legendary skills are also beneficial. When the player returns to level 15, the previous skill points will be returned to the player.
Players can also choose to continue upgrading after that, and they can still get skill points.
So when players want to upgrade all their skills, they can also choose to use legendary skills.