Bottle Cap flings for 30 power, a Loot item since Generation VII
PokéAPI item 836 of 2,223, Loot category, Items pocket
Effect, in PokéAPI's words
Bottle Cap: “Trade to Mr. Hyper to maximize one of a Pokémon’s genes.”
Trade to Mr. Hyper to set one of a Pokémon’s genes to 31.
Games
Bottle Cap is listed in the text of 4 version groups, first in Generation VII
Game index by generation
IIIIIIIVVVIVIIVIIIIX
Named in
Sun and MoonUltra Sun and Ultra MoonLet's Go Pikachu and Let's Go EeveeSword and Shield