Your search for "Entrust the Spark 350" revealed the following:
Entrust the Spark - Sculptor's Stronghold Showcase (Foil) (FRA) from Reality Fracture, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Mintautas Šukys Card Text:You may sacrifice a planeswalker. If you do, search your library for a planeswalker card,...