Pryce’s Piloswine has Ice Shard + Snow Cloak . Solution via Doc: You can catch Lucario (Riolu evolves via high friendship) in the Safari Zone, or Infernape (Chimchar is found on Route 36 via Headbutt).
Go forth, catch a Beldum before the 4th gym, evolve your Scyther with a "Metal Coat" (purchasable in the Goldenrod Dept. Store), and finally defeat Red’s level 88 Pikachu on Mt. Silver. pokemon sacred gold storm silver documentation top