Every sword-wielding hero and villain of the Marvel Universe (616) appears in the Khazan Arena for a grand melee. They battle until one character remains standing. For purposes of this battle, the term "sword" will include any similar blade weapon, including katana, scimitar, (EDIT: no foil) saber, and claymore. A character only qualifies if a sword is part of their standard equipment. Any other weapons from their standard equipment are disallowed in this fight.
EDIT: no cosmic beings, so no Red Shift.