From Bulbapedia, the community-driven Pokémon encyclopedia.
Koga (Japanese: キョウ Kyō) is a Trainer card. It is part of the Gym Challenge expansion.
| If an attack from a Pokémon with Koga in its name does damage to a Defending Pokémon this turn, that Pokémon is then Poisoned.
This card was released as both a Rare Holographic card and a Rare card in the Gym Challenge expansion. The Holographic print is exclusive to the English expansion, while in Japan, the Rare print was released in the Challenge from the Darkness expansion.
Koga is one of the Gym Leaders of the Kanto region.