The smallest modern run.

Twenty-five cards total, mirroring HeartGold and SoulSilver's compact re-imagining of Johto. The shortest modern promo run, distributed through a tighter window than anything that followed it. Box mascots, Johto starters, and Legendary Beasts do the structural heavy lifting.

• Ho-Oh (HGSS01) and Lugia (HGSS02): HGSS Poster Pack gift-with-purchase, Feb 24 2010
• Johto starter holos at HGSS07-09: Feraligatr, Meganium, Typhlosion
• Legendary Beasts at HGSS19-21: Raikou, Entei, Suicune
• Small population, narrow window. Nothing in SM/XY/SWSH shipped this restrained again