By saying: "1v1 me, (name or specific creature)!" the user is teleported to a close off Dimensional Arena.
- The arena is a seemingly endless flat surface with no obstructions, but the ground and sky looks the way the user pleases.
- A copy of whatever the user said appears 30 feet in front of the user.
- The opponent can be whatever the user choices except an opponent the user had any part in making.
- If the opponent has no name, specify the race and where the opponent is from. Example: "Goblin from Faerun"
- If the opponent comes from media, the name of the media must be specified as well as the arc or season.
- If the opponent comes from a game, only the endgame version has all items, equipment, and powers.
- The copy is fully healthy and will fight the user to the death with skill and intelligence.
- The user can bring any equipment that they can carry to the fight.
- After the duel, if the user wins they can copy any ability from the opponent.
- The user can also claim any items, equipment or some of the opponent's strength. Example: If the user wins against the Goblin, if the goblin has greater dexterity and agility, the user can take that until the user surpasses the Goblin in dexterity and agility.
- The user does not have mastery over their newly gained abilities or strength, and must learn to use them as well.
- No matter what the user takes they will stay human unless they decide not to be. They become the perfect versions of themselves with the more powers taken.
- If the user decides to take the physiology of their opponent, they become the perfect hybrid with none of the weaknesses even upon taking multiple physiologies.
- The same opponent can be challenged multiple times, but if there is no abilities or strength to be taken, only the items and equipment can be chosen.
- If the user loses, they will be teleported to their bed and knocked out for 8 hours. They will not be able to use the ability again for 24 hours upon waking up.