Well, then you've forgotten that from time to time Magic adds other rarities such as with the Time Spiral "timeshifted" sheet
"In addition, Hada Freeblade, Spatial Contortion, and Circle of Flame will be banned in Pauper to correct a format issue where they are currently legal in the format despite only appearing at Common as promotional cards." Which is part of what spurred me to write this article (along with the Pauper MCQ), because I believe it's the first time that they acknowledged that there's any kind of problem with Pauper legality, much less the major one they have
If either creature is an illegal target as Knockout Maneuver resolves, the creature you control won't deal damage
So we put a giant yellow sticky note on the card reinforcing not only that that was what was going on, but joking that players wouldn't get it
Watermark: Lorehold Illustrated by Jinho Bae Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Without further ado, heres one of the better decks featuring Glorybringer in the format