Deadly Poison
Cost: Colorless
You may discard a Grass Energy card attached to Seviper. If you do, the Defending Pokémon is now Poisoned.

HP 80 · Grass
Pokémon — Basic
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TCGplayer market price via TCGdex, updated Oct 14, 2026. This price is more than 3 days old, so the market price today can differ. It is an estimate, not an offer. It does not change with the condition or the language of your copy.
Daily TCGplayer market price over the last 30 days.
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Cost: Colorless
You may discard a Grass Energy card attached to Seviper. If you do, the Defending Pokémon is now Poisoned.
Cost: Colorless, Colorless
If the Defending Pokémon is Pokémon-ex, the Defending Pokémon is now Asleep and Poisoned.