[quote=@Eklispe]
The only argument I have there is its not much worse than "and the band played on", but it is a little worse. Maybe if it was only out for like two or three of opponent's EPs?
[/quote]

And the Band Played on doesn't make every deck a R1NK deck, though. And even with the EP restriction, I think the damage is already done by that point. Maybe make it a normal trap that changes the levels of those already on the field, and not additional ones that get summoned.