Simply crew your vehicles, move to combat, and then cast this spell for a game-ending play
The various members of the Sword of X and Y cycle have, outside of formats where Stoneforge Mystic is legal, only ever seen fringe play, and that was before the immense power creep of the last few years
I often throw in a single copy despite its cost, because 1) I think every creature type deserves a "lord," and 2) it's named Nut Collector, which is funny
Since spells and abilities of your opponents cant force you to sacrifice anything, Sigarda can sit neatly above the battlefield, protected by her own hexproof
The plane of Dominaria was the birthplace of the shadow mechanic, so maybe well see shadow again on a return visit, but its a fairly small possibility because R&D avoids putting parasitic mechanics (i.e., mechanics that only work with themselves) in modern sets