Note, however, that the light test isnt foolproof, and shouldnt be used as a single reason to declare the authenticity of a card
Harbinger avoids this problem
While deckbuilding can and does allow us to avoid some of the issues that arise with having a critical mass of a mechanic in the format, it cant solve every issue, and that is no more obvious then it is with treasures
Brackish Blunder may not be one of the better blue bounce spells in recent Limited, but thanks to blues flying threats and tempo potential, this Blunder brings the thunder
This is because it costs zero mana and immediately replaces itself in your hand once your opponent starts
It was a massive, ongoing, mana-free source of card advantage that was played everywhere