Team Aqua's Seviper 17

Search your deck for a Grass Basic Pokémon or Basic Pokémon with Team Aqua in its name and put it onto your Bench. Shuffle your deck afterward. Damage:

Flip a coin. If heads, the Defending Pokémon is now Confused and Poisoned. If tails, the Defending Pokémon is now Poisoned. Damage: 20