With Gotcha itself offering no explanation, its broad-brush policy feels hypocritical, discriminatory, or both, and hopefully a more appropriate way to address whatever problems prompted the stores decision will be enacted
If youre interested in punishing blue players who are drawing endless cards, Underworld Dreams is an intriguing option
Acorn-Stamped Cards
These got a whole new life in Commander, when you could actually start bargaining with them
It's a little more narrow than other white card draw staples like Esper Sentinel or Loran of the Third Path, but also easier on the wallet
While the effect of making a player lose the game by paying one mana of every color is a nice shortcut, since it requires your opponent to have ten or less life, most of the time you're better off saving that mana for spells since they'll be defeated soon anyways