Seems like WPM was right on with his prediction! That one per restriction applied to the original run of Pokemon Star (except it was one, period). The rule also balances them nicely - a one prize big Basic with strong attacks could tip things quickly otherwise.
Sidebar, I'm still baffled that they managed to name a set Stormfront. Even then in 2008, I feel like that should have been an enormous faux pas.
Sidebar, I'm still baffled that they managed to name a set Stormfront. Even then in 2008, I feel like that should have been an enormous faux pas.