Gym Challenge set of Gym series

Koga's Arbok
Stage 1
HP90
Evolves From: Koga's Ekans
Pokédex No.24
Poison Buildup
Koga's Arbok is now Poisoned.
Poison Power
If Koga's Arbok is Poisoned, this attack's base damage is 40 instead of 20 and the Defending Pokémon is now Poisoned.