Knight of the Stampede

• WWizards of the Coast2018-01-19
  Official Ruling
  If an effect refers to a “[subtype] spell” or “[subtype] card,” it refers only to a spell or card that has that subtype. For example, March of the Drowned is a card that benefits Pirates and features Pirates in its illustration, but it isn’t a Pirate card.

Rulings via Scryfall