Card draw can help make good things happen, or at least happen a little more often
Syra Gwyn is unique for dipping into black, while its ability is arguably the most powerful yet for an equipment-based deck
The first advantage of playing this card complementing Darkrai is its resistance to Fighting-types, a type that weakens Darkrai
In a premium product (FTV, judge foil, etc.)

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Wild Guess least so as double red is far more of a problem