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Being able to re-cast Collusion via buying it back by discarding two cards is also relatively unattractive

The cards did not turn out as expected, however

I really embraced this idea that there had to be some really A+ common cards in all the suits, so that when people were playing they wouldnt open a deck with all common cards and feel like, 'Oh I've lost the game.' Absolutely in the first printing of KeyForge, the most powerful cards were common

You can copy simple yet powerful abilities, like planeswalker abilities and anything coming off historically powerful cards like Aetherflux Reservoir and Portal to Phyrexia