Yeah that works for me, new verison. Though given its now a one time would a buff to all monsters like its now written be suitable? If not than the level 4 or lower change works as well.
Card Name: Rule of One
Trap Type: Normal
Effect: Change the levels of all monsters on the field to level 1
Now you can claim you play that that level 1 trains beatdown.
Accepted. EDIT: Slightly rewording it so it doesn't affect Xyz Monsters though.