Ancient Origins set of XY series

Ariados
Stage 1
HP70
Evolves From: Spinarak
Pokédex No.168
AbilityPoisonous Nest
Once during your turn (before your attack), you may use this Ability. Both Active Pokémon (except for Grass Pokémon) are now Poisoned.
Impound
The Defending Pokémon can't retreat during your opponent's next turn.